I had exactly the same bloody thing happening with Firefox about 3 days ago.
Honestly to god, it sux.
Hey hobi; just followed your instructions and I have 'em back!!!! Thanks man!
in that folder called "Profiles";
I found 2 subfolders; 1 called "8n6ukwbe.default" last modified 17th of Feb, and another one called "y9d6dgj3.Default User" last modified Feb 21.
So now I peeked in the 17th Feb one, and there it was.
Copied it in the other folder, since that apperently is the folder of choice of the program, and voilà!