Get the message that the project file is most likely corrupted or of an unkown fromat.

Are there known remedies (the .bak yields the same the message, the program apparently overwrites the previous bak when opening the project ???) or is this a case of un-install and use something else?

Does the file open? Do other projects work normally?

Try googling your exact error message. Also check for any patches for the software. Check your hdd for errors.

JS

Try Saving As to another location, and then see what happens.

Good question.
1) Other projects do open normally.
2) The project doesn't open at all, so I don't think I can save as

Right now, changing folders will not pop up the message to search for missing files, but I am pretty sure when I tried to open it for the first time this afternoon it did spend some time opening files before giving the message. When I make the media files unavailable it will pop up the message right away

Of course you can't save as if it won't open, don't know what I was thinking!

Well, trid to move/rename it but that didn't do anything. Seems it's in the projectfile, rather then the media, though I'd like to clean up any cached data, just to make sure that's not the problem. Any idea where I can find those?

And maybe open it from Admin account, who knows maybe there's a problem with user-rights

Have you run diskcheck yet? It's a long shot, but as Johns suggests I would try that anyway. Possible it could be the source of the problem. So if it does not fix it, it's very good to run anyway. You know how, right?

If you have spinite I might even try that...it's been known to rescue data. I would also back up the media before you do anything so at worst case at least you wont lose that.

Won't help today but for the future you could use my Auto Save custom command which will save a date/time stamped version every x minutes. Then you would have had a backup from "x" minutes ago you could have opened and continued on. Auto Save installs when you install Excalibur but is free to use and will continue working even after Excalibur expires.

That's all-right, thank you. Neat idea to put in a plugin but I guess I can make a script. I never expected Vegas to fail me, I am used to a crash-less experience with it. Ah well, lesson learned.