Does anybody know what the latest Mere Mortals build for Infragistics controls is?

I have installed "MM .NET Infragistics Web Controls Installation (2005 Volume 2).msi" along with "Infragistics NetAdvantageTM 2005 Vol. 3 (V5.3.01)". I drag the UltraWebGrid on a mmBusinessPage web form. Delete it. Then I drag mmUltraWebGrid on the form and get a "Error Creating Control" message. I still bind it to a business object and run the form. I don't get run-time errors, but I don't get data in the grid either. I can drop a mmDataGrid on the same form and bind the same business objec to it and it will display data while the mmUltraWebGrid does not.

I am wondering if it is a versioning problem.

Matthew J. Price