The main issue I’m getting at least with 5.6 is UK2Node_FunctionEntry::Serialize() with blueprints. For the most part, it jumps from different blueprint asset to different blueprint asset that it fails on. It can package maybe 1 out of 10 times though… that being said, it’s issue is always inconsistent UATHelper: Packaging (Windows): LogCore: Warning: ‘UStruct::IsChildOf’ was called with a null ‘this’ pointer - this is no longer supported.
PackagingResults: Warning: ‘UStruct::IsChildOf’ was called with a null ‘this’ pointer - this is no longer supported. UE 5.6.1 is a bit broken at this moment due to this…