the project type is not supported

One beatufiul day opening a project I saw this strange message, and projects are not openable

The project type (.csproj) is not supported by this vecrion of visual studio
I have an Express version c# 2008

I tried do delete and than install VC# again, but nothing helped me.

Help Please!!

Perhaps you are using Express edition
If you use the professional one, I guess it can convert the project into one that matches the current MS version

Regards,
Jeff

I deleted HKEY_CURRENT_USER\Software\Microsoft\VCSExpress
Now all works correct