GetTimeRange crash on project startup

Development Character & Animation
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1

I’m in the midst of upgrading a small side project to 4.17 and I’m getting the following crash on load:

MapCheck: New page: Map Check
LightingResults: New page: Lighting Build
LogMaterial: Missing cached shader map for material M_Background, compiling. 
LogMaterial: Missing cached shader map for material M_Player, compiling. 
LogMaterial: Missing cached shader map for material M_SingleColor, compiling. 
LogWindows: Error: === Critical error: ===
LogWindows: Error: 
LogWindows: Error: Fatal error!
LogWindows: Error: 
LogWindows: Error: Unhandled Exception: EXCEPTION_ACCESS_VIOLATION reading address 0x00000000
LogWindows: Error: 
LogWindows: Error: UE4Editor-MovieScene.dll!FMovieSceneBinding::GetTimeRange() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\moviescene\private\moviescenebinding.cpp:16]
LogWindows: Error: UE4Editor-MovieScene.dll!UMovieScene::UpgradeTimeRanges() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\moviescene\private\moviescene.cpp:669]
LogWindows: Error: UE4Editor-MovieScene.dll!UMovieScene::PostLoad() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\moviescene\private\moviescene.cpp:728]
LogWindows: Error: UE4Editor-CoreUObject.dll!UObject::ConditionalPostLoad() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\coreuobject\private\uobject\obj.cpp:991]
LogWindows: Error: UE4Editor-CoreUObject.dll!EndLoad() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\coreuobject\private\uobject\uobjectglobals.cpp:1561]
LogWindows: Error: UE4Editor-CoreUObject.dll!LoadPackageInternal() [d:\build\++ue4+release

I tried migrating the assets to another project, this works in the sense I can boot up the project but if I open up a UMG asset that contains animations or references to animations it crashes.

I have attached the crash log to the post. Let me know if you need anything from me, happy to provide the project if it helps you to diagnose the problem.

2

Thanks for the report. I’ll try to repro but if you’ve got a test project for me, I’ll be happy to look.

3

Sent you a PM on the forums Max, thanks!

4

Great, thank you. That was perfect. I checked in the fix (CL#3592244) and it will be coming out in 4.17.2. If you need the details of the bug, you should be able to follow this link when it becomes available tomorrow:

https://issues.unrealengine.com/issue/UE-48490

5

i have the same problem.
what is link to the fix?

6

See the answer below, there’s the CL if you can compile the engine yourself. Otherwise, you’ll need to wait for the 4.17.2 hotfix.

7

so i have to wait until…