Error Message ... TM deactivated ... try to repair with repair application

Hi everybody,

Working with Studio 21 SR1. After installting SR1 yesterday, I keep getting this error message

"TM Data have been damaged.

The TM XYZ cannot be opened and has been deactivated. Try to repair the TM entries/data with a TM repair application."

What do I do? What is a TM repair application? Where do I get it? Anything else I need to pay attention to?

Any help greatly appreciated. Thank you.

Uli