Hi everyone.
I am facing the same problem. When I look at the event log, I see 19969 errors :
Web service request GetDataSourceContents to Report Server http://<my_server>/reportserver/ReportService2005.asmx failed with SoapException. Error: Impossible de trouver l'élément '/CGLOBAL_MSCRM/CustomReports/MSCRM_FetchDataSource'.
I understand that it cannot find the data source, but it worked before we applied the march patches (only thing that has been done ...) and I do not konw where we can setup it.
If anyone has a clue ..
Regards