Unreal Engine Issues

UE-20902

A packaged game that contains a plugin with a custom struct and function using that struct will crash on launch.

A packaged game that contains a plugin with a custom struct and function using that struct will crash on launch.

Developer Notes

The plugin may not be loading soon enough. The Type should be "Runtime", and LoadingPhase should be PreDefault. As this plugin is a runtime plugin, and it's needed before the game modules, hence PreDefault.

Questions & Answers
Description

If a project is packaged with a plugin that contains a custom struct and a function that takes that struct as a parameter, the game will crash when the executable is run.

[Link Removed]

Steps to Reproduce
  1. Download the test project linked in the description.
  2. Open the project in the Editor.
  3. Package the project (Windows 64-bit).
  4. Run the packaged .exe file.

RESULT:
The game crashes with the following message: [2015.09.09-17.28.47:349][ 0]LogProperty:Error: Struct type unknown for property 'StructProperty /Game/FirstPerson/NewBlueprint.NewBlueprint_C:ExecuteUbergraph_NewBlueprint.CallFunc_GetVariable_ExtVariable'; perhaps the USTRUCT() was renamed or deleted?.

  • Log file for 4.10 packaged game crash is attached.

EXPECTED:
The game launches.

Community References

[BUG] Packaged game crashes (plugin)

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Non-Issue
ComponentUE - Foundation - Cpp Tools - Plugin System
Affects Versions4.8, 4.9, 4.10
CreatedSep 9, 2015
ResolvedSep 17, 2015
UpdatedJul 14, 2021