UE 5.6 Niagara Crash on Startup

I recently migrated my game from 5.3 to 5.6 and now I’m wanting to use the Niagara System. I’ve briefly used it before and when placing a NS into the world it works fine but when I attempt to open it and edit it the system crashes and gives this report. I’m not sure what to do to fix the issue any help would be appreciated

LoginId:942b030247e354e5bd4c00b170b7eae3
EpicAccountId:773b82d87b9045c4916fb2afe4adab2d

Fatal error: [File:D:\build++UE5\Sync\Engine\Source\Runtime\RHI\Private\PipelineStateCache.cpp] [Line: 533]
Shader compilation failures are Fatal.

UnrealEditor_RHI
UnrealEditor_RHI
UnrealEditor_RHI
UnrealEditor_RHI
UnrealEditor_RHI
UnrealEditor_Core
UnrealEditor_Core
UnrealEditor_Core
UnrealEditor_Core
UnrealEditor_Core
UnrealEditor_Core
UnrealEditor_Core
kernel32
ntdll

Hello there @GM_Dre!

Considering your log, seems you are encountering a shader conflict. And since you just migrated, it could be related to corrupt or missing data tied to the shader cache, or an engine issue. Please try the following:

  • First, clear your project’s cache, via closing UE, deleting folders DerivedDataCache, Intermediate, and Saved from your main directory, then re-open UE, and allow it to rebuild/recompile

  • Next, update your drivers. The best option is to perform a clean install, and choosing “Developer” drivers for the new setup, since those are most stable for engine work.

  • Finally, check your UE build in the Epic Launcher, check the drop-down menu, anc click “Verify”, which should fix any missing or corrupted components.

If everything fails, please test creating a new Niagara system in your project, and see if the crash also appears there. If this is not the case, then your original system could be corrupted, and need to be rebuilt.