problem whit WPF project

Dear Forum

i buy the VS 2008 update professional from VS 2005 professional
I want use WPF, but, when i try to open a new project doing FILE-->NEW PROJECT-->VISUAL C# -->WPF APPLICATION, after some second a error message saing --A ERROR HAS BEEN OCCURR...I NEED TO RESTART VS2008

What can be ? I update my windows XP whit last servece pack

Thanks

Roberto

are you sure the copy is legit?

yes

ovviusly is a original copy.If you look on web site you will see many people have same problem.

Thanks

what if you download c# express from the Microsoft's website?

its free and it will let you test