I'll allow myself to copy the solution over from our discord:Anyone getting a renpy error when they try to access the inventory or achievements?
Common issues:
1. Wardrobe, or interface is crashing..
Error: `Exception: Surface alphas do not match.`
Cause: This error appears because of the invalid game renderer being selected, presumably after playing the experimental branch of the game as settings are shared among retail and developer version of the game.
Solution: Open the game, press SHIFT + G and from the list of renderers pick auto then restart the game.