I'm playing the 0.5.19d public version on win 7. This happened when I tried to start the game.

This seems to be due to your GPU. If your GPU does not support GLES3, you won't be able to play it. Otherwise, try to update your drivers. 

Thanks, it turns out that my computer uses a dual GPU system and my Intel GPU doesn't support GLES3, so when I switched to AMD instead it worked.