Assertion failed: MaterialInstance

Development Asset Creation
, , , ,
1

After I packaged my application and play it, sometimes crash happen… log is below.
My build configuration state is Development and I use ue4.14.3 editor built from source for my project.

[2017.07.13-06.46.22:391][381]LogThreadingWindows:Error: Runnable thread TaskGraphThreadNP 1 crashed.
[2017.07.13-06.46.22:391][381]LogWindows:Error: === Critical error: ===
[2017.07.13-06.46.22:391][381]LogWindows:Error:
[2017.07.13-06.46.22:391][381]LogWindows:Error: Assertion failed: IsInGameThread() || IsAsyncLoading() [File:D:\Source\UnrealEngine\Engine\Source\Runtime\Engine\Private\Materials\MaterialInstance.cpp] [Line: 450]

I have no idea about this. Anyone have idea?

2

Did you find what is wrong? We met the same problem.

3

Latest on this? I’m having this on 4.19

4

Also got this error in 4.21. Added a widget component to an actor. No errors. Selected a widget for the widget component. No errors. Goto the viewport to view the widget and the editor crashes. If no widget is selected for the widget component there is no crash.