Game Not Playing (has worked previously)

I have a student who created a game for Unit 3 Lesson 22 (the project). Her game was running beautifully- until one day it just stopped working. We tried to recreate the game in Game Lab, and it then worked and now has also stopped working. (As in, we hit “Run” and nothing happens, but no changes have occurred to the code since it worked). Any suggestions? We can’t find any obvious errors, and since the code worked fine one day and then not the next, with the same code, we are perplexed.

Thanks!

I’d remix it and share it here. Maybe a second set of eyes will help.