My guess on this is there is some part of Office that got overwritten or clobbered as part of VARA installation. If you have the media to reinstall Office, I would uninstall it and then reinstall it. I would also use Revo Uninstaller to do a thorough uninstallation.
Another possibility is there is some plug-in or add-on for Office that VARA touched. Essentially, use the same complete uninstall and then put it back.
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Doug / N3JXB