Sound to me like something has boogered OfficePro. If it were my problem here's what I would do:

1. Uninstall the OfficePro app.
2. Reboot the computer.
3. Go through the Programs (or Programs x86) folder and remove everything to do with the Office Pro app.
4. Reboot the computer.
5. Export the entire registry to use in case I screw something up with the Registry.
6. Go through the Registry and remove every reference to the OfficePro app. I would do this until no more entries were found.
7. Reboot the computer.
8. Reinstall OfficePro. With a bit of luck and a lot of patience, it should now work properly.