I've updated just now and that error above is the one I get. But only on a more complex mesh, just tested a simple mesh and it didnt throw an error. Still trying to find if its me.
Also, just noticed I now get an error about material size not being same. Do all the materails have to be the same size eg they have to be all 256x256 or you can have any size as long as they are power of two and square. As thats what I have and its throwing an error.
