I had the 3.0 version of XNA.
Now, i have the 3.1 and i have setup extensions for XNA.
But now i have error 2160 !

What can i do ?

---------- Post added at 12:04 PM ---------- Previous post was at 12:01 PM ----------
I'm a beginner in the liberation of Zune HD ><
---------- Post added at 12:59 PM ---------- Previous post was at 12:04 PM ----------
Please help !