It may not necessarily be our document, but something else. I would run a CHKDSK on your hard drive (Open a command window: Start | RUN | CMD (press Enter), type CHKDSK C: /F and press Enter. If you are running on an NTFS files system it will tell you it will run at next reboot. Answer 'Y'. Then reboot.)

Once that's completed, make sure your system is cleaned of temp files. Use a utility like CCleaner - available for free from www.piriform.com and run it.

Once those steps are done, try again to see if you can recover your document.