Hi there,
I am working on a Third person action game that has a wide range of weapons that the player can use. I created a basic inheritance chain for the weapon system that uses a ‘master’ weapon class that is then inherited by all subsequent weapons e.g. spear, sword. These classes have been implemented entirely through blueprint.
This inheritance hierarchy works in 4.1.1 but upon upgrading to 4.2 any windows packages made crash with the following fatal error:
If I remove the sub-classes spear and sword from the scene but place an instance of the master weapon class in the scene the package runs with no issues.
Also, I can no longer ‘play’ our build using a stand alone game option with or without the weapons in the scene, it it reports a crash has occurred at: C://Program with the following error:
Assertion failed: Blueprint->SkeletonGeneratedClass != NULL [File:D:\BuildFarm\buildmachine_++depot+UE4-Releases+4.2\Engine\Source\Editor\UnrealEd\Private\Kismet2\BlueprintEditorUtils.cpp] [Line: 2906]
along with a long list of filename not found lines regarding dlls such as:
Address = 0xe2a9d275 (filename not found) [in C:\Program Files\Unreal Engine\4.2\Engine\Binaries\Win64\UE4Editor-Core.dll]
I will attach the assets for these blueprints as a zip at the end of this post. This weapon inheritance is crucial to our project and any help regarding this issue would be greatly appreciated 
Cheers,
B
[link text][2]