Brandie,

Did you ever determine what was causing this problem? I am suddenly having this problem as well. DTA runs for about a half hour on the 'Submitting Configuration Information' step and then throws the same error you reported. This occurs on the simplest of queries but it seems to hang before it gets to the workload. It was working fine on Feb 12 and then stopped working on Feb 21 so I know that my installation was fine. I installed CU 4 and it still has the same problem.