SSRS report does not display when a filter is added

I have 3 filters currently connected to an SSRS report running in Integrated mode (SSRS 2008 R2 and SharePoint 2010 SP2).

If I add one more multi-select filter, and make a connection to the SSRS report, the SSRS report does not display at all.  Pls note that it is not that the report has no rows selected, it simply does not display.   Even if I completely delete the SSRS report at this point, the dashboard does not display an error message -- again it is as if the report is not a part of the dashboard at all, it is ignored/not displayed.

I have checked and rechecked what parameter values are being passed in, the report works as expected if run outside of the PerformancePoint dashboard.

Any thoughts/comments appreciated.  Thanks.