Fatal Silverlight Error with Clearing Selection

Silverlight Viewer 1.2.1, Silverlight 4.0.60531.0, Geocortex 3.4.1, FireFox 6.0.2, IE 9.0.8112.16421, Windows Server 2k8 Backend, Windows 7

I have crashed my Silverlight Viewer 4 times now without fail.

I have created a selection on Parcels, then I select the parcels, and add them to "My Selection".  When I try to clear selection, the browser is unresponsive, and crashes.

I have also noticed that I can add parcels of the same ID multiple times, is this expected?  Rarely would it make sense to have duplicates in your selection.  I click to generate a report and the report returned removes all duplicates.

Not too sure if it does the same on the Flex Sample Viewer.

Jonetta