Rush Project Won't Open on my PC

I have a project I've been working on and an error report came up.  It crashed and now every time I try to open the project it stops at the gray screen and doesn't load the project: no timeline, just a blank gray screen.  I don't want to lose the hours of work I've already put into this project.  I've cleared the media cache, signed in/out, and neither have worked.  Help please?!  I have a deadline this week.