My engine has began to crash after I attempt any build of any kind. I don’t understand why it’s happening and feel like it’s due to a simple setting that I don’t know because I can’t read the error messages that Unreal gives me.
The error that I receive reads as such:
Assertion failed: ExportSettings == ExistingExportSettings [File:D:\build++UE5\Sync\Engine\Source\Editor\UnrealEd\Private\Lightmass\Lightmass.cpp] [Line: 546] Attempting to add the same material twice with different export settings, this is not (currently) supported
UnrealEditor_UnrealEd
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UnrealEditor_UnrealEd
UnrealEditor_UnrealEd
UnrealEditor_UnrealEd
UnrealEditor_LevelEditor
UnrealEditor_LevelEditor
UnrealEditor_Slate
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UnrealEditor_Slate
UnrealEditor_Slate
UnrealEditor_Slate
UnrealEditor_Slate
UnrealEditor_Slate
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UnrealEditor_Slate
UnrealEditor_ApplicationCore
UnrealEditor_ApplicationCore
UnrealEditor_ApplicationCore
UnrealEditor_ApplicationCore
user32
user32
UnrealEditor_ApplicationCore
UnrealEditor
UnrealEditor
UnrealEditor
UnrealEditor
UnrealEditor
UnrealEditor
kernel32
ntdll
Attempting to add the same material twice with different export settings, this is not (currently) supported
This stands out the most to me but I don’t understand what it could mean, any help in this matter would be appreciated. So far I’ve attempted these fixes:
- Migrating level to a different project
- Changing various project settings
- Re-installing the engine