Here is what the behavior will look like.
Update: Microsoft has released an update (Link to Microsoft KB2803821) that should resolve this issue for Windows users.
August 27, 2013: This update was re-released to resolve the following issue for Windows XP SP3, Windows Server 2003 SP2, Windows Vista SP2, and Windows Server 2008 SP2.
This issue is caused by a specific Windows Security update. It affects all products that leverage .wmv video like Camatasia Relay Recorder.