Crash on launch xcb XInitThreads has not been called

Unreal Engine 4.8.0 - GitHub master build on XUbuntu 15.04.
Build with GTK 3 and launched with “./UE4Editor -opengl4 -binnedmalloc” because otherwise the ShaderCompileWorker crashes the Engine with a free() error.
Now the Engine crashes with the error message:

[xcb] Unknown sequence number while processing queue
[xcb] Most likely this is a multi-threaded client and XInitThreads has not been called
[xcb] Aborting, sorry about that.
UE4Editor: ../../src/xcb_io.c:274: poll_for_event: Assertion `!xcb_xlib_threads_sequence_lost' failed.
Abgebrochen (Speicherabzug geschrieben)

Maybe I’ve to add XInitThreads somewhere to the engine code but I’ve no idea where. Building with Ot4 creates the same error but also the menus do not work correctly in the 4.7 build (This runs without problems but I’d like to try the open world features of 4.8) so I used GTK 3.

The full console output:

Using jemalloc.
Increasing per-process limit of core file size to infinity.
LogInit:Display: Running engine without a game
LogInit:Display: RandInit(699542789) SRandInit(699542795).
LogTaskGraph: Started task graph with 4 named threads and 7 total threads.
LogInit: Version: 4.8.0-0+UE4
LogInit: API Version: 0
LogInit: Compiled (64-bit): Apr 12 2015 03:35:58
LogInit: Compiled with Clang: 3.5.2 (tags/RELEASE_352/final)
LogInit: Build Configuration: Development
LogInit: Branch Name: UE4
LogInit: Command line:  -opengl4 -binnedmalloc
LogInit: Base directory: /home/fossoreslp/ue4build/Engine/Binaries/Linux/
[2015.04.12-10.41.32:671][  0]LogInit: Using libcurl 7.38.0
[2015.04.12-10.41.32:671][  0]LogInit:  - built for x86_64-unknown-linux-gnu
[2015.04.12-10.41.32:671][  0]LogInit:  - supports SSL with OpenSSL/1.0.1i
[2015.04.12-10.41.32:671][  0]LogInit:  - supports HTTP deflate (compression) using libz 1.2.5
[2015.04.12-10.41.32:671][  0]LogInit:  - other features:
[2015.04.12-10.41.32:671][  0]LogInit:      CURL_VERSION_SSL
[2015.04.12-10.41.32:671][  0]LogInit:      CURL_VERSION_LIBZ
[2015.04.12-10.41.32:671][  0]LogInit:      CURL_VERSION_IPV6
[2015.04.12-10.41.32:671][  0]LogInit:      CURL_VERSION_ASYNCHDNS
[2015.04.12-10.41.32:671][  0]LogInit:      CURL_VERSION_LARGEFILE
[2015.04.12-10.41.32:671][  0]LogInit:      CURL_VERSION_TLSAUTH_SRP
[2015.04.12-10.41.32:671][  0]LogInit:  Libcurl: checking if '/etc/pki/tls/certs/ca-bundle.crt' exists
[2015.04.12-10.41.32:671][  0]LogInit:  Libcurl: checking if '/etc/ssl/certs/ca-certificates.crt' exists
[2015.04.12-10.41.32:671][  0]LogInit:  CurlRequestOptions (configurable via config and command line):
[2015.04.12-10.41.32:671][  0]LogInit:  - bVerifyPeer = true  - Libcurl will verify peer certificate
[2015.04.12-10.41.32:671][  0]LogInit:  - bUseHttpProxy = false  - Libcurl will NOT use HTTP proxy
[2015.04.12-10.41.32:671][  0]LogInit:  - bDontReuseConnections = false  - Libcurl will reuse connections
[2015.04.12-10.41.32:671][  0]LogInit:  - CertBundlePath = /etc/ssl/certs/ca-certificates.crt  - Libcurl will set CURLOPT_CAINFO to it
[2015.04.12-10.41.32:676][  0]LogOnline:Warning: No default platform service specified for OnlineSubsystem
[2015.04.12-10.41.32:818][  0]LogInit: Presizing for 0 objects not considered by GC, pre-allocating 0 bytes.
[2015.04.12-10.41.32:824][  0]LogInit: Object subsystem initialized
[2015.04.12-10.41.32:825][  0]LogInit: Selected Device Profile: [Linux]
[2015.04.12-10.41.32:825][  0]LogInit: Applying CVar settings loaded from the selected device profile: [Linux]
[2015.04.12-10.41.32:834][  0]LogInit: Linux hardware info:
[2015.04.12-10.41.32:834][  0]LogInit:  - this process' id (pid) is 3129, parent process' id (ppid) is 2626
[2015.04.12-10.41.32:834][  0]LogInit:  - we are not running under debugger
[2015.04.12-10.41.32:834][  0]LogInit:  - machine network name is 'folp-xubuntu-main'
[2015.04.12-10.41.32:834][  0]LogInit:  - we're logged in locally
[2015.04.12-10.41.32:834][  0]LogInit:  - Number of physical cores available for the process: 4
[2015.04.12-10.41.32:834][  0]LogInit:  - Number of logical cores available for the process: 8
[2015.04.12-10.41.32:834][  0]LogInit:  - Memory allocator used: jemalloc
[2015.04.12-10.41.32:834][  0]LogInit: Linux-specific commandline switches:
[2015.04.12-10.41.32:834][  0]LogInit:  -nodwarf (currently OFF): suppress parsing of DWARF debug info (callstacks will be generated faster, but won't have line numbers)
[2015.04.12-10.41.32:834][  0]LogInit:  -ansimalloc - use malloc()/free() from libc (useful for tools like valgrind and electric fence)
[2015.04.12-10.41.32:834][  0]LogInit:  -jemalloc - use jemalloc for all memory allocation
[2015.04.12-10.41.32:834][  0]LogInit:  -binnedmalloc - use binned malloc  for all memory allocation
[2015.04.12-10.41.32:834][  0]LogInit:  -httpproxy=ADDRESS:PORT - redirects HTTP requests to a proxy (only supported if compiled with libcurl)
[2015.04.12-10.41.32:834][  0]LogInit:  -reuseconn - allow libcurl to reuse HTTP connections (only matters if compiled with libcurl)
[2015.04.12-10.41.32:835][  0]LogInit:  -virtmemkb=NUMBER - sets process virtual memory (address space) limit (overrides VirtualMemoryLimitInKB value from .ini)
[2015.04.12-10.41.32:835][  0]LogInit: Initializing SDL.
[2015.04.12-10.41.33:124][  0]LogInit: Display metrics:
[2015.04.12-10.41.33:124][  0]LogInit:   PrimaryDisplayWidth: 1920
[2015.04.12-10.41.33:124][  0]LogInit:   PrimaryDisplayHeight: 1080
[2015.04.12-10.41.33:124][  0]LogInit:   PrimaryDisplayWorkAreaRect:
[2015.04.12-10.41.33:124][  0]LogInit:     Left=0, Top=0, Right=1920, Bottom=1080
[2015.04.12-10.41.33:124][  0]LogInit:   VirtualDisplayRect:
[2015.04.12-10.41.33:124][  0]LogInit:     Left=0, Top=0, Right=3360, Bottom=1477
[2015.04.12-10.41.33:124][  0]LogInit:   TitleSafePaddingSize: X=0.000 Y=0.000
[2015.04.12-10.41.33:124][  0]LogInit:   ActionSafePaddingSize: X=0.000 Y=0.000
[2015.04.12-10.41.33:124][  0]LogInit:   Number of monitors: 2
[2015.04.12-10.41.33:124][  0]LogInit:     Monitor 0
[2015.04.12-10.41.33:124][  0]LogInit:       Name: BenQ GL2460 24"
[2015.04.12-10.41.33:124][  0]LogInit:       ID: display0
[2015.04.12-10.41.33:124][  0]LogInit:       NativeWidth: 1920
[2015.04.12-10.41.33:124][  0]LogInit:       NativeHeight: 1080
[2015.04.12-10.41.33:124][  0]LogInit:       bIsPrimary: true
[2015.04.12-10.41.33:124][  0]LogInit:     Monitor 1
[2015.04.12-10.41.33:124][  0]LogInit:       Name: X193W 19"
[2015.04.12-10.41.33:124][  0]LogInit:       ID: display1
[2015.04.12-10.41.33:124][  0]LogInit:       NativeWidth: 1440
[2015.04.12-10.41.33:124][  0]LogInit:       NativeHeight: 900
[2015.04.12-10.41.33:124][  0]LogInit:       bIsPrimary: false
[2015.04.12-10.41.33:124][  0]LogInit:  - Physical RAM available (not considering process quota): 8 GB (7944 MB, 8135040 KB, 8330280960 bytes)
[2015.04.12-10.41.33:131][  0]LogTextLocalizationManager: The requested culture ('de_DE') has no localization data; falling back to 'en' for localization and internationalization data.
[2015.04.12-10.41.33:234][  0]LogTextLocalizationManager:Warning: Loading localization resources contain conflicting entries for (Namespace:ContentBrowser, Key:ImportAssetToolTip):
Resource: (/home/fossoreslp/ue4build/Engine/Content/Localization/Editor/en/Editor.locres) Hash: (-630476809) String: (Import to {0}...)
Resource: (/home/fossoreslp/ue4build/Engine/Content/Localization/Editor/en/Editor.locres) Hash: (1271782899) String: (Imports an asset from file to this folder.)
[2015.04.12-10.41.33:400][  0]LogRHI:Warning: disabling reporting back of debug groups and markers to the OpenGL debug output callback
[2015.04.12-10.41.33:402][  0]LogRHI:Warning: disabling reporting back of debug groups and markers to the OpenGL debug output callback
[2015.04.12-10.41.33:403][  0]LogRHI: Initializing OpenGL RHI
[2015.04.12-10.41.33:403][  0]LogRHI:   GL_VENDOR: NVIDIA Corporation
[2015.04.12-10.41.33:403][  0]LogRHI:   GL_RENDERER: GeForce GTX 780 Ti/PCIe/SSE2
[2015.04.12-10.41.33:403][  0]LogRHI:   GL_VERSION: 4.3.0 NVIDIA 346.59
[2015.04.12-10.41.33:403][  0]LogRHI:   GL_SHADING_LANGUAGE_VERSION: 4.30 NVIDIA via Cg compiler
[2015.04.12-10.41.33:403][  0]LogRHI: OpenGL Extensions:
[2015.04.12-10.41.33:403][  0]LogRHI:   GL_AMD_multi_draw_indirect
[2015.04.12-10.41.33:403][  0]LogRHI:   GL_AMD_seamless_cubemap_per_texture
[2015.04.12-10.41.33:403][  0]LogRHI:   GL_ARB_arrays_of_arrays
[2015.04.12-10.41.33:403][  0]LogRHI:   GL_ARB_base_instance
[2015.04.12-10.41.33:403][  0]LogRHI:   GL_ARB_bindless_texture
[2015.04.12-10.41.33:403][  0]LogRHI:   GL_ARB_blend_func_extended
[2015.04.12-10.41.33:403][  0]LogRHI:   GL_ARB_buffer_storage
[2015.04.12-10.41.33:403][  0]LogRHI:   GL_ARB_clear_buffer_object
[2015.04.12-10.41.33:403][  0]LogRHI:   GL_ARB_clear_texture
[2015.04.12-10.41.33:403][  0]LogRHI:   GL_ARB_clip_control
[2015.04.12-10.41.33:403][  0]LogRHI:   GL_ARB_color_buffer_float
[2015.04.12-10.41.33:403][  0]LogRHI:   GL_ARB_compressed_texture_pixel_storage
[2015.04.12-10.41.33:403][  0]LogRHI:   GL_ARB_conservative_depth
[2015.04.12-10.41.33:403][  0]LogRHI:   GL_ARB_compute_shader
[2015.04.12-10.41.33:403][  0]LogRHI:   GL_ARB_compute_variable_group_size
[2015.04.12-10.41.33:403][  0]LogRHI:   GL_ARB_conditional_render_inverted
[2015.04.12-10.41.33:403][  0]LogRHI:   GL_ARB_copy_buffer
[2015.04.12-10.41.33:403][  0]LogRHI:   GL_ARB_copy_image
[2015.04.12-10.41.33:403][  0]LogRHI:   GL_ARB_cull_distance
[2015.04.12-10.41.33:403][  0]LogRHI:   GL_ARB_debug_output
[2015.04.12-10.41.33:403][  0]LogRHI:   GL_ARB_depth_buffer_float
[2015.04.12-10.41.33:403][  0]LogRHI:   GL_ARB_depth_clamp
[2015.04.12-10.41.33:403][  0]LogRHI:   GL_ARB_depth_texture
[2015.04.12-10.41.33:403][  0]LogRHI:   GL_ARB_derivative_control
[2015.04.12-10.41.33:403][  0]LogRHI:   GL_ARB_direct_state_access
[2015.04.12-10.41.33:403][  0]LogRHI:   GL_ARB_draw_buffers
[2015.04.12-10.41.33:403][  0]LogRHI:   GL_ARB_draw_buffers_blend
[2015.04.12-10.41.33:403][  0]LogRHI:   GL_ARB_draw_indirect
[2015.04.12-10.41.33:403][  0]LogRHI:   GL_ARB_draw_elements_base_vertex
[2015.04.12-10.41.33:403][  0]LogRHI:   GL_ARB_draw_instanced
[2015.04.12-10.41.33:403][  0]LogRHI:   GL_ARB_enhanced_layouts
[2015.04.12-10.41.33:403][  0]LogRHI:   GL_ARB_ES2_compatibility
[2015.04.12-10.41.33:403][  0]LogRHI:   GL_ARB_ES3_compatibility
[2015.04.12-10.41.33:403][  0]LogRHI:   GL_ARB_ES3_1_compatibility
[2015.04.12-10.41.33:403][  0]LogRHI:   GL_ARB_explicit_attrib_location
[2015.04.12-10.41.33:403][  0]LogRHI:   GL_ARB_explicit_uniform_location
[2015.04.12-10.41.33:403][  0]LogRHI:   GL_ARB_fragment_coord_conventions
[2015.04.12-10.41.33:403][  0]LogRHI:   GL_ARB_fragment_layer_viewport
[2015.04.12-10.41.33:403][  0]LogRHI:   GL_ARB_fragment_program
[2015.04.12-10.41.33:403][  0]LogRHI:   GL_ARB_fragment_program_shadow
[2015.04.12-10.41.33:403][  0]LogRHI:   GL_ARB_fragment_shader
[2015.04.12-10.41.33:403][  0]LogRHI:   GL_ARB_framebuffer_no_attachments
[2015.04.12-10.41.33:403][  0]LogRHI:   GL_ARB_framebuffer_object
[2015.04.12-10.41.33:403][  0]LogRHI:   GL_ARB_framebuffer_sRGB
[2015.04.12-10.41.33:403][  0]LogRHI:   GL_ARB_geometry_shader4
[2015.04.12-10.41.33:403][  0]LogRHI:   GL_ARB_get_program_binary
[2015.04.12-10.41.33:403][  0]LogRHI:   GL_ARB_get_texture_sub_image
[2015.04.12-10.41.33:403][  0]LogRHI:   GL_ARB_gpu_shader5
[2015.04.12-10.41.33:403][  0]LogRHI:   GL_ARB_gpu_shader_fp64
[2015.04.12-10.41.33:403][  0]LogRHI:   GL_ARB_half_float_pixel
[2015.04.12-10.41.33:403][  0]LogRHI:   GL_ARB_half_float_vertex
[2015.04.12-10.41.33:403][  0]LogRHI:   GL_ARB_imaging
[2015.04.12-10.41.33:403][  0]LogRHI:   GL_ARB_indirect_parameters
[2015.04.12-10.41.33:403][  0]LogRHI:   GL_ARB_instanced_arrays
[2015.04.12-10.41.33:403][  0]LogRHI:   GL_ARB_internalformat_query
[2015.04.12-10.41.33:403][  0]LogRHI:   GL_ARB_internalformat_query2
[2015.04.12-10.41.33:403][  0]LogRHI:   GL_NV_internalformat_sample_query
[2015.04.12-10.41.33:403][  0]LogRHI:   GL_ARB_invalidate_subdata
[2015.04.12-10.41.33:403][  0]LogRHI:   GL_ARB_map_buffer_alignment
[2015.04.12-10.41.33:403][  0]LogRHI:   GL_ARB_map_buffer_range
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_multi_bind
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_multi_draw_indirect
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_multisample
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_multitexture
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_occlusion_query
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_occlusion_query2
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_pipeline_statistics_query
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_pixel_buffer_object
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_point_parameters
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_point_sprite
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_program_interface_query
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_provoking_vertex
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_robust_buffer_access_behavior
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_robustness
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_sample_shading
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_sampler_objects
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_seamless_cube_map
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_seamless_cubemap_per_texture
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_separate_shader_objects
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_shader_atomic_counters
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_shader_bit_encoding
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_shader_draw_parameters
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_shader_group_vote
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_shader_image_load_store
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_shader_image_size
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_shader_objects
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_shader_precision
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_query_buffer_object
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_shader_storage_buffer_object
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_shader_subroutine
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_shader_texture_image_samples
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_shader_texture_lod
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_shading_language_100
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_shading_language_420pack
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_shading_language_include
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_shading_language_packing
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_shadow
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_sparse_buffer
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_sparse_texture
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_stencil_texturing
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_sync
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_tessellation_shader
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_texture_barrier
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_texture_border_clamp
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_texture_buffer_object
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_texture_buffer_object_rgb32
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_texture_buffer_range
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_texture_compression
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_texture_compression_bptc
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_texture_compression_rgtc
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_texture_cube_map
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_texture_cube_map_array
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_texture_env_add
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_texture_env_combine
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_texture_env_crossbar
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_texture_env_dot3
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_texture_float
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_texture_gather
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_texture_mirror_clamp_to_edge
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_texture_mirrored_repeat
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_texture_multisample
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_texture_non_power_of_two
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_texture_query_levels
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_texture_query_lod
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_texture_rectangle
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_texture_rg
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_texture_rgb10_a2ui
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_texture_stencil8
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_texture_storage
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_texture_storage_multisample
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_texture_swizzle
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_texture_view
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_timer_query
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_transform_feedback2
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_transform_feedback3
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_transform_feedback_instanced
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_transform_feedback_overflow_query
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_transpose_matrix
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_uniform_buffer_object
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_vertex_array_bgra
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_vertex_array_object
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_vertex_attrib_64bit
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_vertex_attrib_binding
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_vertex_buffer_object
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_vertex_program
[2015.04.12-10.41.33:404][  0]LogRHI:   GL_ARB_vertex_shader
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_ARB_vertex_type_10f_11f_11f_rev
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_ARB_vertex_type_2_10_10_10_rev
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_ARB_viewport_array
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_ARB_window_pos
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_ATI_draw_buffers
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_ATI_texture_float
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_ATI_texture_mirror_once
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_S3_s3tc
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_EXT_texture_env_add
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_EXT_abgr
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_EXT_bgra
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_EXT_bindable_uniform
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_EXT_blend_color
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_EXT_blend_equation_separate
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_EXT_blend_func_separate
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_EXT_blend_minmax
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_EXT_blend_subtract
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_EXT_compiled_vertex_array
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_EXT_Cg_shader
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_EXT_depth_bounds_test
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_EXT_direct_state_access
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_EXT_draw_buffers2
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_EXT_draw_instanced
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_EXT_draw_range_elements
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_EXT_fog_coord
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_EXT_framebuffer_blit
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_EXT_framebuffer_multisample
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_EXTX_framebuffer_mixed_formats
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_EXT_framebuffer_multisample_blit_scaled
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_EXT_framebuffer_object
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_EXT_framebuffer_sRGB
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_EXT_geometry_shader4
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_EXT_gpu_program_parameters
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_EXT_gpu_shader4
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_EXT_multi_draw_arrays
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_EXT_packed_depth_stencil
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_EXT_packed_float
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_EXT_packed_pixels
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_EXT_pixel_buffer_object
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_EXT_point_parameters
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_EXT_polygon_offset_clamp
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_EXT_provoking_vertex
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_EXT_rescale_normal
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_EXT_secondary_color
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_EXT_separate_shader_objects
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_EXT_separate_specular_color
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_EXT_shader_image_load_store
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_EXT_shader_integer_mix
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_EXT_shadow_funcs
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_EXT_stencil_two_side
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_EXT_stencil_wrap
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_EXT_texture3D
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_EXT_texture_array
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_EXT_texture_buffer_object
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_EXT_texture_compression_dxt1
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_EXT_texture_compression_latc
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_EXT_texture_compression_rgtc
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_EXT_texture_compression_s3tc
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_EXT_texture_cube_map
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_EXT_texture_edge_clamp
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_EXT_texture_env_combine
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_EXT_texture_env_dot3
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_EXT_texture_filter_anisotropic
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_EXT_texture_integer
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_EXT_texture_lod
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_EXT_texture_lod_bias
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_EXT_texture_mirror_clamp
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_EXT_texture_object
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_EXT_texture_shared_exponent
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_EXT_texture_sRGB
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_EXT_texture_sRGB_decode
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_EXT_texture_storage
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_EXT_texture_swizzle
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_EXT_timer_query
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_EXT_transform_feedback2
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_EXT_vertex_array
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_EXT_vertex_array_bgra
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_EXT_vertex_attrib_64bit
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_EXT_x11_sync_object
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_EXT_import_sync_object
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_IBM_rasterpos_clip
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_IBM_texture_mirrored_repeat
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_KHR_context_flush_control
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_KHR_debug
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_KHR_robust_buffer_access_behavior
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_KHR_robustness
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_KTX_buffer_region
[2015.04.12-10.41.33:405][  0]LogRHI:   GL_NV_bindless_multi_draw_indirect
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_NV_bindless_multi_draw_indirect_count
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_NV_bindless_texture
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_NV_blend_equation_advanced
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_NV_blend_square
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_NV_command_list
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_NV_compute_program5
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_NV_conditional_render
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_NV_copy_depth_to_color
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_NV_copy_image
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_NV_depth_buffer_float
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_NV_depth_clamp
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_NV_draw_texture
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_NV_ES1_1_compatibility
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_NV_ES3_1_compatibility
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_NV_explicit_multisample
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_NV_fence
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_NV_float_buffer
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_NV_fog_distance
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_NV_fragment_program
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_NV_fragment_program_option
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_NV_fragment_program2
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_NV_framebuffer_multisample_coverage
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_NV_geometry_shader4
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_NV_gpu_program4
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_NV_gpu_program4_1
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_NV_gpu_program5
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_NV_gpu_program5_mem_extended
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_NV_gpu_program_fp64
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_NV_gpu_shader5
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_NV_half_float
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_NV_light_max_exponent
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_NV_multisample_coverage
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_NV_multisample_filter_hint
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_NV_occlusion_query
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_NV_packed_depth_stencil
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_NV_parameter_buffer_object
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_NV_parameter_buffer_object2
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_NV_path_rendering
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_NV_pixel_data_range
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_NV_point_sprite
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_NV_primitive_restart
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_NV_register_combiners
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_NV_register_combiners2
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_NV_shader_atomic_counters
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_NV_shader_atomic_float
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_NV_shader_atomic_int64
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_NV_shader_buffer_load
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_NV_shader_storage_buffer_object
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_NV_texgen_reflection
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_NV_texture_barrier
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_NV_texture_compression_vtc
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_NV_texture_env_combine4
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_NV_texture_multisample
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_NV_texture_rectangle
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_NV_texture_shader
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_NV_texture_shader2
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_NV_texture_shader3
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_NV_transform_feedback
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_NV_transform_feedback2
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_NV_uniform_buffer_unified_memory
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_NV_vdpau_interop
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_NV_vertex_array_range
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_NV_vertex_array_range2
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_NV_vertex_attrib_integer_64bit
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_NV_vertex_buffer_unified_memory
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_NV_vertex_program
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_NV_vertex_program1_1
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_NV_vertex_program2
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_NV_vertex_program2_option
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_NV_vertex_program3
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_NVX_conditional_render
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_NVX_gpu_memory_info
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_NVX_nvenc_interop
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_NV_shader_thread_group
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_NV_shader_thread_shuffle
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_KHR_blend_equation_advanced
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_SGIS_generate_mipmap
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_SGIS_texture_lod
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_SGIX_depth_texture
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_SGIX_shadow
[2015.04.12-10.41.33:406][  0]LogRHI:   GL_SUN_slice_accum
[2015.04.12-10.41.33:407][  0]LogRHI:   GL_MAX_TEXTURE_SIZE: 16384
[2015.04.12-10.41.33:407][  0]LogRHI:   GL_MAX_CUBE_MAP_TEXTURE_SIZE: 16384
[2015.04.12-10.41.33:407][  0]LogRHI:   GL_MAX_ARRAY_TEXTURE_LAYERS: 2048
[2015.04.12-10.41.33:407][  0]LogRHI:   GL_MAX_3D_TEXTURE_SIZE: 2048
[2015.04.12-10.41.33:407][  0]LogRHI:   GL_MAX_RENDERBUFFER_SIZE: 16384
[2015.04.12-10.41.33:407][  0]LogRHI:   GL_MAX_TEXTURE_IMAGE_UNITS: 32
[2015.04.12-10.41.33:407][  0]LogRHI:   GL_MAX_DRAW_BUFFERS: 8
[2015.04.12-10.41.33:407][  0]LogRHI:   GL_MAX_COLOR_ATTACHMENTS: 8
[2015.04.12-10.41.33:407][  0]LogRHI:   GL_MAX_SAMPLES: 32
[2015.04.12-10.41.33:407][  0]LogRHI:   GL_MAX_COLOR_TEXTURE_SAMPLES: 32
[2015.04.12-10.41.33:407][  0]LogRHI:   GL_MAX_DEPTH_TEXTURE_SAMPLES: 32
[2015.04.12-10.41.33:407][  0]LogRHI:   GL_MAX_INTEGER_SAMPLES: 32
[2015.04.12-10.41.33:407][  0]LogRHI:   GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS: 192
[2015.04.12-10.41.33:407][  0]LogRHI:   GL_MAX_VERTEX_ATTRIBS: 16
[2015.04.12-10.41.33:407][  0]LogRHI:   GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT: 16
[2015.04.12-10.41.33:407][  0]LogRHI: OpenGL MajorVersion = 4, MinorVersion = 3, ShaderPlatform = GLSL_430, FeatureLevel = SM5
[2015.04.12-10.41.33:411][  0]LogRHI: Texture pool is 2150 MB (70% of 3072 MB)
[2015.04.12-10.41.33:411][  0]LogShaderCompilers:Display: Using Local Shader Compiler.
[2015.04.12-10.41.34:646][  0]LogHAL: FLinuxPlatformProcess::CreateProc: spawned child 3144
[2015.04.12-10.41.35:391][  0]LogHAL: Child 3144 is no more running (zombie), Wait()ing immediately.
[2015.04.12-10.41.35:391][  0]LogTemp:Display: Loaded TP DesktopTargetPlatform
[2015.04.12-10.41.36:164][  0]LogTemp:Display: Loaded TP LinuxServerTargetPlatform
[2015.04.12-10.41.36:550][  0]LogTemp:Display: Loaded TP LinuxNoEditorTargetPlatform
[2015.04.12-10.41.36:935][  0]LogTemp:Display: Loaded TP LinuxTargetPlatform
[2015.04.12-10.41.36:935][  0]LogTargetPlatformManager:Display: Building Assets For Linux
[2015.04.12-10.41.37:619][  0]LogDerivedDataCache:Display: Max Cache Size: 512 MB
[2015.04.12-10.41.37:650][  0]LogDerivedDataCache: Loaded boot cache 0.03s 53MB ../../../Engine/DerivedDataCache/Boot.ddc.
[2015.04.12-10.41.37:650][  0]LogDerivedDataCache:Display: Loaded Boot cache: ../../../Engine/DerivedDataCache/Boot.ddc
[2015.04.12-10.41.37:650][  0]LogDerivedDataCache: FDerivedDataBackendGraph:  Pak pak cache file ../../../Engine/DerivedDataCache/DDC.ddp not found, will not use a pak cache.
[2015.04.12-10.41.37:650][  0]LogDerivedDataCache: Unable to find inner node Pak for hierarchical cache Hierarchy.
[2015.04.12-10.41.37:650][  0]LogDerivedDataCache: FDerivedDataBackendGraph:  EnginePak pak cache file ../../../Engine/DerivedDataCache/DDC.ddp not found, will not use a pak cache.
[2015.04.12-10.41.37:650][  0]LogDerivedDataCache: Unable to find inner node EnginePak for hierarchical cache Hierarchy.
[2015.04.12-10.41.37:651][  0]LogDerivedDataCache: Using Local data cache path ../../../Engine/DerivedDataCache: Writable
[2015.04.12-10.41.37:651][  0]LogDerivedDataCache: Shared data cache path not found in *engine.ini, will not use an Shared cache.
[2015.04.12-10.41.37:652][  0]LogDerivedDataCache: Unable to find inner node Shared for hierarchical cache Hierarchy.
[2015.04.12-10.41.37:784][  0]LogInit: Selected Device Profile: [Linux]
[2015.04.12-10.41.38:337][  0]LogMeshUtilities: No automatic mesh reduction module available
[2015.04.12-10.41.38:337][  0]LogMeshUtilities: No automatic mesh merging module available
[2015.04.12-10.41.38:339][  0]LogHAL: Linux SourceCodeAccessSettings: KDevelopSourceCodeAccessor
[2015.04.12-10.41.44:880][  0]UdpMessaging: Initializing bridge on interface 0.0.0.0:0 to multicast group 230.0.0.1:6666.
[2015.04.12-10.41.46:092][  0]SourceControl: Info Source control is disabled
[2015.04.12-10.41.46:092][  0]SourceControl: Info Source control is disabled
[xcb] Unknown sequence number while processing queue
[xcb] Most likely this is a multi-threaded client and XInitThreads has not been called
[xcb] Aborting, sorry about that.
UE4Editor: ../../src/xcb_io.c:274: poll_for_event: Assertion `!xcb_xlib_threads_sequence_lost' failed.
Abgebrochen (Speicherabzug geschrieben)

Thanks for your help in advance!

BackTo project manager

Hey BtSDevTeam-

This is a known issue that has already been reported (UE-13628) and is being investigated. Currently you can use the GitHub commit below as a workaround to the crash:

GitHub commit - https://github.com/EpicGames/UnrealEngine/commit/18adb27627593d271ba6592cc6aa417b6970ef3a

Cheers