SUCCESS!! It works. I tried it with the full versions of the files with which I had problems, and they're all fine.
 
To Noel and all the great team at Cakewalk - thanks for your support and response.  John (the post above) said it .. This is first class support. Excellent! I'm pretty well speechless over this fantastic response and support!
 
Regards
Jerry

Great news, Thanks Jerry for taking the time to follow up and send us a project that could demonstrate the issue easily. It turned out that it was fixed as part of our work to address the MIDI cc editing problem. There was some ineffiencies in the drawing code that we addressed.

Noel Borthwick [Cakewalk]
Great news, Thanks Jerry for taking the time to follow up and send us a project that could demonstrate the issue easily. It turned out that it was fixed as part of our work to address the MIDI cc editing problem. There was some ineffiencies in the drawing code that we addressed.

So is there an ETA for this fix? 
 
Because Platinum is essentially unusable right now for anybody who works with a lot of VIs and who has to do a lot of CC editing for things like dynamics, expression, vibrato, and so on.