When I try to add the Client Access Role to my Exchange 2007 server(with or without the Update Rollup 2). I get Event 4999 Event Type:ErrorEvent Source:MSExchange CommonEvent Category:General Event ID:4999Date:10/06/2007Time:07:40:48User:N/AComputer:ADCDescription:Watson report about to be sent to dw20.exe for process id: 5980, withparameters: E12, c-RTL-AMD64, 08.00.0693.000, exsetupui, M.E.Data,M.E.D.MultiValuedProperty`1.Add, System.InvalidOperationException,323a, 08.00.0693.000 For more information, see Help and Support Center athttp://go.microsoft.com/fwlink/events.asp. And Event 5000 EventType e12, P1 c-rtl-amd64, P2 08.00.0693.000, P3 exsetupui, P4m.e.data, P5 m.e.d.multivaluedproperty`1.add, P6system.invalidoperationexception, P7 323a, P8 08.00.0693.000, P9 NIL,P10 NIL. For more information, see Help and Support Center athttp://go.microsoft.com/fwlink/events.asp.