http://blogs.msdn.com/scottwoo/archive/2005/01/26/361339.aspxIn the BizTalk Server 2004 SP1 install instructions you will see we require a FIX to the .NET Framework. The fix specifically is for this issue: If you import schemas from assemblies that contain redundant imports. For example, if Schema1.xsd importsen-USCommunityServer 2.1 SP1 (Build: 61025.2)http://blogs.msdn.com/scottwoo/archive/2005/01/26/361339.aspx#363866Mon, 31 Jan 2005 16:59:00 GMT91d46819-8472-40ad-a661-2c78acb4018c:363866josethankshttp://blogs.msdn.com/scottwoo/archive/2005/01/26/361339.aspx#365854Thu, 03 Feb 2005 01:48:00 GMT91d46819-8472-40ad-a661-2c78acb4018c:365854Rolando Ramirez's WebLoghttp://blogs.msdn.com/scottwoo/archive/2005/01/26/361339.aspx#365864Thu, 03 Feb 2005 02:01:00 GMT91d46819-8472-40ad-a661-2c78acb4018c:365864Rolando Ramirez's WebLoghttp://blogs.msdn.com/scottwoo/archive/2005/01/26/361339.aspx#384538Thu, 03 Mar 2005 23:44:00 GMT91d46819-8472-40ad-a661-2c78acb4018c:384538Charles Young