Corrupt File Help!

Hello guys,

This is my first post ever, and I need a response ASAP. I have been working on my Physical Chemistry Homework for 2 days now and while I was just about to finish, something odd happened. It told me the file was corrupt and shut down. I have attached the error message that appears. This is due tomorrow and I really need help!!! I have attached my file as well.

Please help!!!!