2.4 shuts down when I try to save file
 

I have a sudden issue with one of my Alice files. I'm working on the prototype game for my final project in my class and everything was going fine, then suddenly the file stopped saving. Every time I click "Save" or use Control S, it shuts down and all work from the last save disappears.

I did move one file--the instructions for the game--into the backups folder. Thinking that was the issue, I deleted it. Still I'm having get shut down on me.

I attached the file. Could it have anything to do with the file being 23+MB when not zipped?

Thanks for the help.

Interesting Problem
 

I have had this issue before, what i have done is saved the file as "save file as" then changed the name, that's all the advice I can give, as it is the only solution I have needed it use.