Unhandled Exception: EXCEPTION_ACCESS_VIOLATION

When I click on my mod to learn the engram (skill) in the dev kit my kit crashes - this is also happening to a mod I already have published that I need to update - My first mod has not been changed yet and the Second one is set up exactly the same way. The crash does not happen at any other time, only when I click on the skill to learn it

I have 3 mods just waiting to publish but I really would like to test them in the kit before releasing them - any help would be greatly appreciated