Hi djmulder,
Our process back in beta was different than it is now. This was marked as resolved in beta because it was able to be resolved by editing the source code, which was a suitable solution at the time. Seeing as we are now released, I’ve put a bug into our database for this issue. For your reference, the bug number is UE-16755. In the meantime, if you are able to use the source code version of the engine, you can make a few simple changes to fix this issue. Navigate to the file “MaterialInterface.h” and change the following lines of code from:
int32 GetWidth() const;
int32 GetHeight() const;
to
ENGINE_API int32 GetWidth() const;
ENGINE_API int32 GetHeight() const;
The issue you were experiencing was because these functions weren’t being exported to the ENGINE_API as most functions are, so it was giving you an access violation.
Have a nice day