When opening Unreal Engine 4.9.
I clicked the Landscape Mode.
Changed Material to M_Ground_Grass (Preset in UE4).
Section Size: 63x63 Quads
Sections Per Component: 1x1 Section
Number of Components: 16x16
Overall Resolution: 1009x1009
Clicked the “Create” button.
Clicked the “Build” button (to get rid of those squares on the landscapes).
Once done, while in the Landscape Mode.
Clicked Paint.
Change the Circle to Pattern.
And it crashed.
Unknown exception - code 00000001 (first/second chance not available)
"Assertion failed: (uint32)BlendMode < NumBSS [File:d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\engine\public\BatchedElements.h] [Line: 307]
"
UE4Editor_Core!FDebug::AssertFailed() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\core\private\misc\outputdevice.cpp:354]
UE4Editor_Engine!FBatchedElements::FSimpleElementBSSContainer::GetBSS() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\engine\public\batchedelements.h:308]
UE4Editor_Engine!FBatchedElements::PrepareShaders() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\engine\private\batchedelements.cpp:661]
UE4Editor_Engine!FBatchedElements::Draw() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\engine\private\batchedelements.cpp:1063]
UE4Editor_Engine!FCanvasBatchedElementRenderItem::Render_GameThread'::8’::EURCMacro_BatchedDrawCommand::DoTask() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\engine\private\userinterface\canvas.cpp:469]
UE4Editor_Engine!TGraphTask<FCanvasBatchedElementRenderItem::Render_GameThread'::8’::EURCMacro_BatchedDrawCommand>::ExecuteTask() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\core\public\async\taskgraphinterfaces.h:779]
UE4Editor_Core!FTaskThread::ProcessTasks() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\core\private\async\taskgraph.cpp:539]
UE4Editor_Core!FTaskThread::ProcessTasksUntilQuit() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\core\private\async\taskgraph.cpp:340]
UE4Editor_RenderCore!RenderingThreadMain() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\rendercore\private\renderingthread.cpp:310]
UE4Editor_RenderCore!FRenderingThread::Run() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\rendercore\private\renderingthread.cpp:411]
UE4Editor_Core!FRunnableThreadWin::Run() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\core\private\windows\windowsrunnablethread.cpp:74]
