I have a user who while opening an existing Excel spreadsheet, gets the following WPBI error: Error Loading Addins. She can click "OK" and Excel continues to run fine. It is "annoying" to the user and quite interesting to me. I have tried to start Excel in safe mode, in which it does not happen. I have gone into the xlstart folder, where I found nothing. I have tried a Repair and still happens... Any ideas as this is going from interesting to driving me crazy.