The latest update seems to have nuked all of the shared plugins for the ProChannel.  Quite frustrating.  I am going to reinstall Sonar when I get my computer back to an internet connection and hope that fixes it.  I forget the exact path at the moment, but here is just one of the files that are missing from that directory:
 
PCS-GlossEQM.dll
 
And others like that, including all of my One Knob modules.  The ProChannel compressor, console simulator, eq, all of those are not working.

reinstall sonar ? why ?
why not just try to rescan your plug ins / or reset if needed ?

chuckebaby
reinstall sonar ? why ?
why not just try to rescan your plug ins / or reset if needed ?

Yeah man I did rescan.  BUT, it is not my third party VSTs (Kontakt, Reaktor), etc. that are missing.  It is the ProChannel's actual application files, the dynamic link library (.dll) files that are missing.  I'm assuming re-installing Sonar will get them replaced.
 
I do not know what the reset function does, but I'll try it.  Maybe it checks the integrity of the installation and fixes it?

The reset function clears the SONAR VST Inventory from the registry and then runs a scan to rebuild it. The regular scan looks for changes since the last scan and updates the VST Inventory. The path to the PC modules is silently added to the scan, PC modules are based on the VST2 spec and are added to the VST Inventory by the VST scanner. The default 64bit location for most PC modules is "C:Program Files\Cakewalk\Shared Utilities\Internal." Rollback and forward should get the EQ back.

scook
The reset function clears the SONAR VST Inventory from the registry and then runs a scan to rebuild it. The regular scan looks for changes since the last scan and updates the VST Inventory. The path to the PC modules is silently added to the scan, PC modules are based on the VST2 spec and are added to the VST Inventory by the VST scanner. The default 64bit location for most PC modules is "C:Program Files\Cakewalk\Shared Utilities\Internal." Rollback and forward should get the EQ back.

Yes, that was the directory path :) On my computer it is now almost empty but for a few folders.  I will look for the rollback feature somewhere and see what happens.

Rollback is an option on the SONAR Platinum context menu in the Command Center. Right-click the SONAR Platinum line to see the menu.

scook
Rollback is an option on the SONAR Platinum context menu in the Command Center. Right-click the SONAR Platinum line to see the menu.

 
I did the rollback, then the update, no love.  Now I am using the "Install All" from Command Center.  Next resetting the VST settings, then uninstalling and reinstalling....
 
Here is what I see before I reset vst settings or reinstall and uninstall:

 
And here is my folder after using the "Install All," before this there were no .dll files there:

 
But the issue resulting in the first pic still remains. Resetting plugins and rescanning for them did not help.  Now I am going to uninstall and reinstall Sonar Platinum :(

Reinstalling Sonar fixed the problem.  I guess this was a total drive-by problem specific to my my computer?  I'm glad it is fixed, at any rate.  Thanks for your inputs.