When I drill-through to a sub-report, the sub-report displays correctly but once I click on the interactive sort arrow, the entire report data disappears. I am using the same configuration as on the main report where the interactive sort works just fine. Anyone else seen this?

There are known issues related to using interactive sort in subreports in CTP June. These have been fixed and will be available in the next CTP and in SQL Server 2005 RTM.-- Robert

Hi Robert, maybe not exactly the same issue/bug...but interactive sorting in combination with subreports seems to be still ab BIG fault in the product (SQL2005-2012). Do you know from CUs/hotfixes for the problem in SQL2008R2/SQL2012 ? see also: Interactive Sort does not work with SubReports (2008R2) http://social.msdn.microsoft.com/Forums/en-US/sqlreportingservices/thread/05d86923-08d1-49c9-bb26-abdaddf35a55/ Regards, JJ