Bump!
 
Sorry about that... I wanted to bump this up and post to it as well... I downloaded your cwp this morning but had only 10 minutes to play with it so far... but your point is very obvious now that I see the file.
 
I was just getting ready to check that cwp more and couldn't find the thread!

Okay... first... when I do something similar to what you are doing, I will often insert a soft synth and then shift-drag (to lock timing) the track of concern into that soft synths MIDI track (rather than having TTS-1 route to it, since MIDI data in the track will fire a synth off regardless of channel). I see your track 8 is routed to Dimension Pro, so played with that a bit, and the more I played with it, the more confused I became. Inserting Dimention Pro works fine up until the point that you assign the TTS-1 to drive it... then it goes offline (completely). So I inserted another, shift-dragged the MIDI note data into Dim Pro, and it went offline again!
 
So, I created a new project, and threw in Dim Pro, assigned it to M1 Organ and copied/pasted the MIDI data from your project. As soon as I did this, Dim Pro went offline again! In my frustration, I then added soft synths, one after the other, and shift-dragged the MIDI data down, and every one played perfectly fine. Here are the ones I used:
 
Z3TA 2.1
Korg Wavestation
Lounge Lizard
Addictive Keys
Rapture
True Pianos
Pentagon
 
All played fine!!...
 
Now here is the ultimate kicker... I insert Dim Pro a second time (track 9)... shift-drag the MIDI data one last time... and it PLAYS!! Ugh... so I scratch my head... shift-drag it back up to the first instance again, and "nothing." (In fact, the track 1 instance of Dim Pro is unresponsive to any MIDI inputs at all). Shift-drag back and forth a few times... Track 1 - nothing... Track 9 - fine...
 
Dimension Pro does have some weird behavior going on here... still scratching my head wondering "what" though.
 
Edit: Submitted this to Cakewalk as CWBRN-22211 and linked this post.
 
Edit2: I removed the leading data from this MIDI track, but cannot remember where in the process I did this. My bigger "concern" is that those notes (if Dim Pro is ever played) put Dim Pro in a "dead state" and I have not seen/found any way to recover it from such.

Wow, thanks for doing all that, mettelus! You rock! I'm very glad to know it's not just me. I was beginning to think I was crazy or something.
 
We'll see if the folks at Cakewalk chime in with anything after they check out your report.

No problem... I am actually glad you posted this... I *have* seen this myself in the past, but immediately shrugged it off and found another work-around to get what I needed done (i.e. grabbed a comparable synth). It is significantly different to be staring at "no other options" and trying to make it work.
 
Edit: Thank you for being patient enough to (wait and) post your cwp!! That is very helpful to prove it is not a "this machine vs that machine" issue!

Here is what I found.
 
There was control data at the beginning of track 8. I went into the Event List and removed the three events before the first note.
 
Track 8 was pointed to an instance of DimPro assigned to an instrument track. I deleted that synth and track. Added a new instance of DimPro with an audio track only. Pointed track 8 to that instance of DimPro.
 
It works OK now.
 
So there was data at the front of the MIDI track and a routing problem causing the track not to play properly. You might also want to add a master bus to route the audio tracks to instead of going directly to the interface.
 

Among the things I tried was removing those first three events, and for me, it had no impact... but I didn't delete the track and insert Dim Pro again.
 
The three events are probably SysEx events. I often find MIDI files with those at the beginning but never really had any trouble with any synths because of them.

It wasn't simply deleting and reinserting DimPro, it was deleting the instrument track and adding an instance of DimPro with an audio track.

Thanx scook for figuring this out. I was working on the file also and did what Alchuck did by deleting those lines but I did not think of deleting the instrument track. Good find.

This weekend I took an existing MID file, added an instance of Dimension Pro and this time selected just one output audio track for it. Assigned a MIDI track to it and it played just fine. Then I added an instance of TTS-1, again selecting just one audio output track for it. Assigned a MIDI track to it and it played just fine. But even better, the Dimension Pro also played with it.