Problem with Windows Phone SDK 7.1.

What do I do? I’m having a lot of problems with my Windows Phone SDK 7.1. I recently installed it and I keep getting the following errors on some of my plug ins. Can someone help me?
I attached a screenshot of the error report below. It’s in Deutsch though.
Fehler bei der Installation von Windows Phone SDK 7.1 – Deutsch. Reparieren oder neu installieren.
Help me
Thanks
