Silverlight Tools for Visual Studio 2008 Installation Blocked

Incompatible dlls from installation of Visual Studio 2008 SP1 after installation of Silverlight Tools for Visual Studio 2008 SP1 will block installation of Silverlight Tools for Visual Studio 2008 SP1.

Attempting to install Silverlight Tools for Visual Studio 2008 in this state will result in an "Installation Blocked" dialog stating "Installation was unable to proceed due to previously installed items. See http://go.microsoft.com/fwlink/?LinkID=121479 for detailed information."

To resolve this issue and successfully install Silverlight Tools for Visual Studio 2008 SP1:

1. Download and unzip Silverlight_Tools_Fixup.zip
2. Run the Silverlight_Tools_Fixup.vbs script to detect and resolve previous installation conflicts
3. Install Silverlight Tools for Visual Studio 2008 SP1