This has never happened to me until today, after updating to SONAR 2016.09. When I'm scrolling through tracks in the track view using the up and down arrows everything works fine until I get to a folder, once I'm in a folder's first track I get stuck and the up and down arrows do not take me to the next/previous track. If I click on a track outside of a folder, everything works again.

I couldnt repro this

Noel Borthwick [Cakewalk]
I couldnt repro this

Strange. Any ideas on what could be going on?

Update: Only happening on one project. The first one I opened after updating.  All other projects fine.  This project was originally created in either Sonar 8.5 or earlier. Opened other old projects, no issues.  Only new thing introduced into project was several Waves Abbey Road plugins which I also installed today. Deleted them and problem still there. Problem wasn't happening in the early release version of 2016.09 as far as I remember, unless I didn't notice.
 

Also, only project in which I've used Mix Recall.

No one else having this issue? Suggestions, ideas?

Just found the culprit! I would get stuck on any track that had the PC 4K Expander/Gate module in the ProChannel regardless of the track being in a folder or not.  Can anyone else try to repro this to see if it's 2016.09 specific or not? Thanks!

Hmmm... good one. Confirmed. Nice work figuring that out.

brundlefly
Hmmm... good one. Confirmed. Nice working figuring that out.

Thanks for confirming, brundlefly! I appreciate it. 

Update: Once I'm stuck in a track with PC4K, SONAR doesn't respond to any keystrokes that use the arrow keys (like control + any arrow key to zoom horizontally or vertically) until I click outside of the offending track with my mouse.