Audio problems with Session Drummer 3

So I've looked on the forum and found similar posts but, no luck here. I've tried to insert SD3 into the synth rack as a simple instrument and as midi source, synth track folder, first synth audio output with the same result. What is hapenning is when I select a kit from SD3, I can hit the pads and hear the resulting audio. As soon as I go to my track view and play a midi sequence, I can see the meter move on the midi drum track but get no audio output from SD 3. If I go back to SD3, now I can't hear the audio when I hit the pads. It will come back when I re-select the drum kit but, when I go back to the track view the same thing happens. No audio output from SD3. I have never had this problem before and been using Cakewalk since the Pro Audio days so I'm not exactly a newbie. Any ideas??

Yes, long hmmmmmm. When inserting the synth I'm only checking simple instrument and synth properties. Like you said, it seems the midi data doesn't get through to the soft synth. If I try it with TTS-1, it works fine. Just not with SD3.

No, it's a midi file I downloaded but as I said it plays in TTS-1 and as fara as I know the notes are not too high and correspond to the correct instruments.

Thanks, you were right. The other events were "gumming" it up. I have seen that before but, it's been awhile since I've used someone elses midi file. Thanks for the reminder!!!

I'm having just about the exact same issue.

Using Sonar X1 with X1a patch, 64 bit.  Line 6 Toneport ASIO audio drivers (current).

When I insert SD from track template (only way I can find to insert it), it inserts all the tracks, routing looks right.  When I click the drums in the synth, I get sound and the appropriate track and bus meters move.  When I play a pattern from within the synth, I get sound and proper meters again.  When I drag a clip directly from session drummer into the midi track that opens with all the other tracks and hit play in my project, only the meter from the midi track moves, and I get no sound.  When I go to output settings of the midi track, the only option is SD3 which is selected.

If I then close the project without saving (trying to get rid of SD3) and open a new project, SD3 isn't even an option to insert.  I have to completely close Sonar and reopen.  I'm completely in love with the track templates because they do all the tedious routing, but being able to drag grooves from SD3 into a midi track would be helpful .  I didn't have this issue on 8.5.  Any suggestions at all?

Never mind, I got it.  Needed to re-scan existing plugins.  Why, I have no idea, but it worked.

I'm also having audio problems with Session Drummer 3.  I was using SI-Drum Kit and this works fine but I changed to Session Drummer 3 as I wanted to route each part of the kit to a different track and you can't do this with SI-Drum Kit. 
 
I have loaded Session Drummer as a Soft Synth and each part of the kit is assigned to a different track.  When I play the kit within Session Drummer I can hear the output and the metres within Cakewalk show that sound is registered but after dragging and dropping a beat into Cakewalk, when I play the track I can't hear the drums.  I have all the drum tracks output to a Drum Bus and the output for the bus is the Master which is the same as same as my guitar and vocal tracks which I can hear ok. 
 
What am I doing wrong?!

Thanks for responding brundlefly.  I don't think the "beat" is a 3rd party MIDI file, it's just something from Session Drummer and I've tried various other kits and beats.  I've now discovered that if I load Session Drummer as a Simple Instrument Track then it's fine but the problem is if I load it as All Synth Audio Outputs.  The Piano Roll View shows nothing but with Simple Instrument Track it shows the beats as expected.  I'm stumped. Any ideas?

Scook, that was the problem.  I had no MIDI track!  Thanks for your help.