Description

The attached project crashes when you use the RunClient.bat and attempt to host a game. This brings up a loading screen, which then crashes before it is ever displayed. I have been unable to reproduce this issue in the editor, and it only seems to occur when running the RunClient.bat and clicking the Host button.

There seem to be two crashes occurring using the same repro steps. I get one of the two callstacks each time seemingly at random, and they both have a different source context.

I have been unable to reproduce this issue in a clean project.

Crash reporter links: [Link Removed]
[Link Removed]

Steps to Reproduce

1. Download this project: [Link Removed]
2. Start Run Client.bat (hardcoded installation location, so you might need to change it)
3. Click Host
4. In the following screen, click Host again.

Result: Project crashes

Expected: Loading screen would appear without issue as it does when playing in standalone.

Callstack

There are two callstacks that I am seeing.

UE4Editor_SlateCore!FSlateBatchData::CreateRenderBatches() drawelements.cpp:291 
UE4Editor_SlateRHIRenderer!FSlateRHIRenderer::DrawWindow_RenderThread() slaterhirenderer.cpp:409 
UE4Editor_SlateRHIRenderer!TGraphTask<`FSlateRHIRenderer::DrawWindows_Private'::`36'::EURCMacro_SlateDrawWindowsCommand>::ExecuteTask() taskgraphinterfaces.h:779 
UE4Editor_Core!FTaskThread::ProcessTasks() taskgraph.cpp:539 
UE4Editor_Core!FTaskThread::ProcessTasksUntilQuit() taskgraph.cpp:340 
UE4Editor_RenderCore!RenderingThreadMain() renderingthread.cpp:310 
UE4Editor_RenderCore!FRenderingThread::Run() renderingthread.cpp:411 
UE4Editor_Core!FRunnableThreadWin::Run() windowsrunnablethread.cpp:74  
 UE4Editor_SlateRHIRenderer!TGraphTask<`FSlateRHIResourceManager::FindOrCreateDynamicTextureResource'::`34'::EURCMacro_UpdateSlateUTextureResource>::ExecuteTask() taskgraphinterfaces.h:779 
UE4Editor_Core!FTaskThread::ProcessTasks() taskgraph.cpp:539 
UE4Editor_Core!FTaskThread::ProcessTasksUntilQuit() taskgraph.cpp:340 
UE4Editor_RenderCore!RenderingThreadMain() renderingthread.cpp:310 
UE4Editor_RenderCore!FRenderingThread::Run() renderingthread.cpp:411 
UE4Editor_Core!FRunnableThreadWin::Run() windowsrunnablethread.cpp:74  
Community References

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Fixed
ComponentUE - Editor - UI Systems
Affects Versions4.10
Target Fix4.12
CreatedJan 4, 2016
ResolvedApr 28, 2016
UpdatedJun 8, 2016