Need Help Rendering/Bouncing Midi to Audio in Sonar X1 - Superior Drummer

Hi I'm having a really stressing issue. Just got Sonar X1 Producer and Superior Drummer2. Finished writing a song and now I'm trying to mix everything down to an mp3 so I can show my band. The drums don't come out on the final mp3. After much googling I found that I'm supposed to BOUNCE TO TRACK...basically rendering the Midi to audio within sonar..then mix down.

Problem is when I highlight the midi drums and select bounce to track it gives me error:

"The specified selection did not contain any audio data. Please ensure that the selection contains the audio data you with to bounce"

My guitar player uses the same setup and is having the same issue.

If anyone can help I'd sure appreciate it. Thanks