Thank you for allowing free downloads, I'm exited to try this whenever I can get it running. I'm on Linux and it shows a fatal error that says: "Shader compilation failed" on startup, the console only prints "open: No such file or directory" before the error. I'm currently on an old laptop that only supports opengl 2.1, that might be why it doesn't work. I'll have a new one in a few months in any case.