Corrupt File? Don't panic, try this tip...
  Why do files get corrupt? Who knows...Hopefully this process will repair your file.
Office programs have built in programs to help repair some of these files. One possible solution is illustrated below:
  1. On the File menu, click Open.
  2. In the Look in list, click the drive, folder, or Internet location that contains the file that you want to open.
  3. In the folder list, locate and open the folder that contains the file.
  4. Select the file that you want to recover.
  5. Click the arrow next to the Open button, and then click Open and Repair.
  6. Hopefully your file is repaired :)