panoramixtx,
Please follow the steps outlined below as it could either resolve your issue or, if need be, provide us with additional information to determine the cause of this issue.
1. Ensure you log onto the computer experiencing the issue with “Administrator” rights.
2. Next we would like to confirm that you are running the most current version of the Genuine Advantage control on your computer. In order to do this please follow the below link and choose the “Validate Office” option.
http://www.microsoft.com/genuine
Lori MS