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Crash a few seconds after start


My game crashes a few seconds after start with the following stack trace:

LoginId:cc904449407f1c5b8b611ba7d2f5a6bc EpicAccountId:faa1d9f5d8074bc0b0df7ac794f3b77c

 Access violation - code c0000005 (first/second chance not available)
 UE4Editor_Slate!FSlateApplication::GetNavigationDirectionFromAnalog() [d:\build\++ue4+release-4.18+compile\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:2001]
 UE4Editor_SlateCore!SWidget::OnAnalogValueChanged() [d:\build\++ue4+release-4.18+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:239]
 UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\build\++ue4+release-4.18+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:492]
 UE4Editor_Slate!PrepassWindowAndChildren() [d:\build\++ue4+release-4.18+compile\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:1343]
 UE4Editor_Slate!FSlateApplication::DrawPrepass() [d:\build\++ue4+release-4.18+compile\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:1391]
 UE4Editor_Slate!FSlateApplication::PrivateDrawWindows() [d:\build\++ue4+release-4.18+compile\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:1433]
 UE4Editor_Slate!FSlateApplication::DrawWindows() [d:\build\++ue4+release-4.18+compile\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:1190]
 UE4Editor_Slate!FSlateApplication::TickApplication() [d:\build\++ue4+release-4.18+compile\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:1777]
 UE4Editor_Slate!FSlateApplication::Tick() [d:\build\++ue4+release-4.18+compile\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:1595]
 UE4Editor!FEngineLoop::Tick() [d:\build\++ue4+release-4.18+compile\sync\engine\source\runtime\launch\private\launchengineloop.cpp:3378]
 UE4Editor!GuardedMain() [d:\build\++ue4+release-4.18+compile\sync\engine\source\runtime\launch\private\launch.cpp:166]
 UE4Editor!GuardedMainWrapper() [d:\build\++ue4+release-4.18+compile\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:134]
 UE4Editor!WinMain() [d:\build\++ue4+release-4.18+compile\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:210]
 UE4Editor!__scrt_common_main_seh() [f:\dd\vctools\crt\vcstartup\src\startup\exe_common.inl:253]

I have no idea what those paths points to, I have neither a D: driver or an F: drive on my computer. Any idea what might be wrong? Seems to stem from the UE4Editor itself?

I checked the game log also, but it contained nothing interresting.

Product Version: UE 4.18
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asked Nov 29 '17 at 10:06 PM in Bug Reports

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avatar image Trey Z ♦♦ STAFF Nov 30 '17 at 01:04 PM


First thing I would try is un-installing and re-installing UE4 from your computer. Then I would try loading up other projects and/or creating a blank project to see if those crash. If the re-install doesn't work could you send me your project over at the Unreal Forums (https://forums.unrealengine.com/) at the same username that I have here on AnswerHub so I can take a look at it.

avatar image dkoding Nov 30 '17 at 10:42 PM

I did as you suggested - completely removed Unreal Engine, then downloaded and installed UE4.18.1 again. That made no difference at all. I updated my GeForce drivers to latest version. Still crashing. However, I have found a way to provoke the crash. In VR mode - look straight down. The viewport will gray out, then stutter, then UE editor will crash. This happens 9 out of 10 times - with the stack trace above. I also see other bug reports on the forum with the exact same stack trace. Please fix this, the UE editor is impossible to use when it is crashing all the time. Stop adding new features - fix all the crashes first!

Attached is my DxDiag filelink text

dxdiag.zip (15.6 kB)
avatar image Trey Z ♦♦ STAFF Dec 01 '17 at 03:34 PM


Thanks for linking that Jira issue below. We have someone looking into this as it is a frequent crash that has come in from CrashReporter. I went and tested this on our Vive and Occulus but I was unable to get it to reproduce. Could you provide me with some detailed repro steps that lead to the crash?

avatar image dkoding Dec 01 '17 at 07:34 PM

I tried to build the game, and when running the built game executable the game does not crash at all. So it seems it is 'VR preview' in the editor related.

avatar image dkoding Dec 01 '17 at 02:21 PM
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1 answer: sort voted first


The issue is definitely related to VR Preview and it already covered by the crash you found in UE-51725. Keep using that link you provided so you can check for updates. Like I mentioned we do have someone actively looking into this.

Thanks again

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answered Dec 04 '17 at 01:10 PM

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Trey Z ♦♦ STAFF
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