https://www.dropbox.com/s/86m58jt96x9vu ... 9.png?dl=0
Its doing this on two seperate systems, and I can replicate it by simply adding a sprite to an empty project.
One system has a recently updated Java 8, the other was still on 7, but continued to get the error after uninstalling it, and updating to 8.
There are no errors when using 256.