I am trying to generate a WMV file from the Premiere Pro timeline, but everytime it gives me an error stating "Unknown Windows Media Error". This error code only comes up when Aspect HD is being used and not otherwise. Any workarounds to this problem?

I've done many WMV exports myself without issue, so something must be setup wrong. Please file a trouble tricket at www.cineform.com/support

Thanks, David. I filed a support ticket, so hopefully that should lead me in the right direction.