ColdFusion 8: .NET integration issue

I have problem with ColdFusion .NET integration.
I installed CF 8 server on my computer (Windows Vista, CF8 Version 8,0,1,195765, .NET Framework 3.5 SP1, server: C:/ColdFusion8/, sites: C:/ColdFusiion8/wwwroot). All was OK and the test script was working fine.
I copyed this file on server (Windows Server 2003 Standard Edition SP2, CF8 Version 8,0,1,195765, server: C:/ColdFusion8/, sites: D:/wwwroot) and installed .NET framework 3.5 SP1 and ColdFusion .NET integration service........
I am getting the below error:

Class System.IO.DriveInfo not found in the specified assembly list.
The assembly that contains the class must be provided to the assembly attribute.

I can't configure Windows Server. Please do provide a solution for this