I double checked the render engines, nothing special, nothing which could crash. Nano Space uses much more complex shaders and it works too. Based on the results you send me (textures wrong overlapped) it' definitely not an error in the game itself. To find the thing which triggers it I need a Mac to test it on. If you have the time and interest to help me finding the error I can send you several copies, each with code parts disabled, to find the error this way. However the chance of success is low since the error could be everywhere.
I apologize for this issue.