[Recuva Files]

Things recuva detects are not taking up any disk space at all; if you leave them they will be overwritten eventually. If you would like to delete them for privacy reasons, you can run file shredder or eraser:

http://www.fileshredder.org/

http://www.heidi.ie/eraser/

[How does Recuva actually work?]

When you delete a file from the recycle bin, the computer marks the space it occupied as "unused", and any application can write to that space. If you have a large hard disk and a decent amount of luck, by the time you run recuva, none of the file will have been overwritten. If part of the file has been overwritten, it will (as in your case) not work at all or (usually with large movie files) part of it won't work. That's just tough luck; there's absolutely nothing anyone can do, sorry