- Create a new project (First Person Template, C++ version, no starter content)
- Enabled CommonUI plugin (and restart engine)
- Create a new widget extending CommonActivatableWidget (it can be empty) lets call it TestA
- In BP_FirstPersonCharacter add a blueprint script (needed to open full blueprint editor) that does “Event BeginPlay” → “Create Widget (TestA)”
Restart Editor
Now I get the error:
CreateExport: Failed to load Outer for resource ‘WidgetTree’: WidgetBlueprintGeneratedClass /Game/FirstPerson/Blueprints/TestA.TestA_C
And I can’t open TestA anymore. And BP_FirstPersonCharacter has compile errors.
Removing the script in BP_FirstPersonCharacter and restarting lets me open TestA again.
Reproduced in 5.3.0 preview 1 and 5.2.1
Windows 10
My question here is: Am I doing something wrong or is this just a bug?