Got an Error 1304 when the SQL Server 2005 Express Setup was installing the SQL Support files on a Windows XP Professional SP3 PC. This particular message indicated a problem with the .NET Framework. The typical uninstall of .NET Framework 2.0 in Add/Remove programs and re-installing didn’t work.
Thanks to this blog: http://blogs.msdn.com/astebner/archive/2008/03/07/8108332.aspx I was able to download the .NET Framework cleanup tool, uninstall .NET Framework 2.0, reinstall .NET Framework 2.0 and finally finish the SQL Server 2005 Express Setup!
