Bizarre..
I may have not been specific enough. I’m running FCE 4.0 and CS5 on a Mac OS X 10.5.8. I did try to go through the auto save fault but, all the files gave the following error message: “unreadable or too new for this version of Final Cut” . I have since re-started my project and have gotten it back to the place before the issue occurred. How I got to this conclusion was that, after clearing cache etc etc I open up a project, imported a CS5 file then closed the project. Once I tried to reopen I got that error message.
If noone else is experiencing it, it must be my machine then. Anyway, thought I’d post incase anyone else had this issue..
thanks for the replies