I've updated the gui file to a 2.0 version that removes a small bug at line 876 in screen.rpy

I had added a space at the end of the font define:

font "font/OleoScriptSwashCaps-Regular.ttf" 

was 

font "font/OleoScriptSwashCaps-Regular.ttf " (with an empty space at the end)

this would cause a crash in the options screen. 

Please download the new version, or change that extra space in the code!

Very sorry everyone!! Let me know if you find any more bugs I'm happy to fix them :D