Remote Control Blue Screen

Remote Control Blue Screen

When initiating a remote control session through SDP it starts up, give the prompt on the remote machine and when accepted a pop up states that I'm now controlling the remote PC !. The issue is that the screen is completely blue and I have no control over the remote machine.
We are currently running SDP 8.0.0 Build 8013 using IE 8 and Firefox 3.6.25.  Fire fox 8 states the add-on downloaded appears to be corrupt.
 
Any help with this would be greatly appreciated.

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