Well, thanks to scook, I was able to figure this out. Since I wasn't given the choice about vst2 or vst3, I assume this may be an issue only with the new subscription version or Command Center or something like that. But in any case when installing the Prochannel Bundle to SONAR Platinum using the Command Center, I was not given any choice between VST3 or VST2, and as scook said, only the VST2 version installs the Prochannel plugin. The VST3 version installs the full plugin version.
As it turns out, the VST2 version is installed by Command Center, but its location is not included in the default list of vst locations to scan. The following location has to be manually added to the Plugin Manager list:
C:\Program Files\Cakewalk\VstPlugins
Sure enough, it works like a charm now!
The Strum GS-2.dll is also located in this spot, so it's possible that including it in your vst scan might improve its function as well, though I have not verified this.
I emailed Support and suggested this was a bug to fix.
So thanks again to everybody for the help.
post edited by Gonga - 2015/11/09 17:48:30