Fixing Corrupt Illustrator file?

[GreenKnight37]

Well I was working on my Zero vectorization for several hours yesterday, and I was just a few parts away from completing it.  Come this morning, I'm getting an error message.

"Can't open the illustration.   The illustration contains an illegal or misplaced operator.

Offending Operator: "U"

"

Now thankfully, my file will still open with 90% of the content there.  But one of my main vector layers is all gone.  I can retrace it and put the detail back, but I'd rather fix the problem if possible.  I can't find any specific info on the web for this particular error, so maybe someone here can give me some advice?

Oh, and I did backup the file, but its got the same corruption issue.  I'm 100% certain it was the backup process of saving it to a USB disk that ruined my vector.  Even the Adobe help forums were talking about how saving backups sometimes ruin vectors....how stupid is that?

[GreenKnight37]

Woo!

After reading about errors in Illustrator 10, I was able to use an older method to generate a text-file of the graphics.  Then I was able to make a damn lucky guess about what to remove in an encrypted text file, and its all fixed! 

So I've got it working again!  Now I don't have to stress about having a broken file that I put many hours of work into!