If you have not installed .Net Framework 3.0 your computer yet, click the link below, download the redistributable package and install it.
And some information about known issues about netfx3.
And also I prefer you to visit these sites for more information about NetFX3.
Kadir CamogluPosted Jan 24, 2007, 2:50 AM
There is a utility to uninstall previous WinFX versions. May be it will help you. http://www.microsoft.com/downloads/details.aspx?FamilyId=AAE7FC63-D405-4E13-909F-E85AA9E66146&displaylang=en
Mahesh ChandPosted Jan 23, 2007, 8:12 AM
Is this version compatible with previous WinFX versions? I had previous versions, I uninstalled them and installed this one, every thing got screwed. Any body tried the same?