Packaging Error (Ensure condition failed: GetSuperClass() [File:D:\Build\++UE4+Release-4.16+Compile\Sync\Engine\Source\Runtime\Engine\Private\BlueprintGeneratedClass.cpp] [Line: 1236])

[PhroZenOne]

I have the same problem and reported it here. No solution to the problem I’m afraid: Cook fails in 4.16 preview 1 - Blueprint - Unreal Engine Forums
But if you also comment there maybe thats a way to get some attention from the unreal dev team.