I started out by exploring the wallpapers, and the game crashed while I was looking at each. It didn't stop me from finishing the game, but I thought I'd mention it in case you didn't already know about that issue.
No, I went back in and looked at more wallpapers afterward to no problem. If I had to guess, it's because of opening them up one after another in quick succession. Keep in mind also that this jam doesn't allow updates, so you might want to want till your game has been judged to fix it.