Unreal Editor 100% crashes when project's initiation is almost finished

Development Platform & Builds
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1

Hello.

Today I decided to move my project from editor 4.10.4 to new version - 4.11.0. But now Unreal Editor 100% crashes when project’s initiation is almost finished (at 90% to be more specific). I tried to work with copy of 4.10.4 project and convert it in-place, the result is always the same - 100% crash on project initiation.

I think all required crash logs were already sent via the engine’s automated crash report tool several times.

In Unreal Editor 4.10.4 everything still works fine, but I really want to move my project to 4.11.0 ASAP. Hope this crash will be fixed soon.

2

Hello,

Could you please cause the crash to occur again and provide your Machine ID so that we can look up the Crash Report?

Does this happen with any 4.10.4 project that you open in 4.11?

3

Hi, and sorry for the delay.

I’ve got the ID you mentioned, but have a question. Is it safe to post it here? Maybe I better send the ID via e-mail?

I didn’t try to reproduce the problem on a different project yet, so I’ll do it right now.

4

Also, since the crashlog body doesn’t contain any IDs I think it’s safe to post it here:

Assertion failed: ModuleManager.IsModuleLoaded(ModuleName) [File:D:\BuildFarm\buildmachine_++UE4+Release-4.11\Engine\Source\Runtime\Core\Public\Modules\ModuleManager.h] [Line: 240]
Tried to get module interface for unloaded module: ‘FoliageEdit’

UE4Editor_Core!FDebug::AssertFailed() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\core\private\misc\outputdevice.cpp:430]
UE4Editor_UnrealEd!FModuleManager::GetModuleChecked() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\core\public\modules\modulemanager.h:240]
UE4Editor_UnrealEd!FModuleManager::LoadModuleChecked() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\core\public\modules\modulemanager.h:285]
UE4Editor_UnrealEd!FEditorModeRegistry::Initialize() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\editor\unrealed\public\editormoderegistry.cpp:61]
UE4Editor_UnrealEd!FUnrealEdMisc::OnInit() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\editor\unrealed\private\unrealedmisc.cpp:229]
UE4Editor_UnrealEd!EditorInit() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\editor\unrealed\private\unrealed.cpp:86]
UE4Editor!GuardedMain() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\launch\private\launch.cpp:133]
UE4Editor!GuardedMainWrapper() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\launch\private\windows\launchwindows.cpp:126]
UE4Editor!WinMain() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\launch\private\windows\launchwindows.cpp:200]
UE4Editor!__scrt_common_main_seh() [f:\dd\vctools\crt\vcstartup\src\startup\exe_common.inl:264]
kernel32
ntdll

5

Hello again. I think I managed to narrow down the issue. It somehow tied to plugins.

I noticed “FoliageEdit” in the original crash log, so I tried to create an empty project on 4.10.4 and turn OFF most of the plugins. And I wasn’t surprised that editor crashed after I tried to convert this project to 4.11.0 and start the editor.

I’m not sure which plugin exactly causes the issue in my project and empty project, but I believe it is Custom Mesh Component or Procedural Mesh Component. I have them both turned OFF in my project as the project is purely 2D and doesn’t use any 3D assets.

6

I opened my project in 4.10.4 and turned all plugins in Rendering section back ON. After this I tried to open the project in 4.11.0, and crash didn’t happen. Editor is compiling shaders as I’m talking. I’ll let you know if everything will end as intended.

7

Unfortunately, 4.11.0 introduced some rendering issues to my project:
(1) All UI elements have lost the regular quality, and that is very noticable.
(2) Something wrong happened with in-game font - some texts do not fit their fields and get cut at the bottom.

None of this happened in 4.10.4 or any previous version I used.
Not sure if it’s tied to the rendering plugins, but still the problem exist and I don’t know how to fix it yet.

8

One more problem: many outdated folders that I deleted long ago re-appeared. I even noticed a folder that I didn’t create at all: Splashes.

I’m not sure what else could probably happen in my project in 4.11.0, so I can’t risk using this version for further development and have to go back to 4.10.4 for now.

9

Hello,

I have been able to reproduce your crash, (it involves attempting to upgrade a project from 4.10 to 4.11 that has the LightMassPropagation plugin disabled) and have entered a bug report (UE-29010). Thank you for your report. I will provide updates on this issue as they become available.

Have a great day

10

Thanks :slight_smile:

I hope the bug will be fixed soon. I still have to deal with other mentioned problems in 4.11.0. I think I’m better to create new questions about them when I’ll make sure they are not a problems on my side.