Scan Plug Ins Failure - Help!

Under your Sonar VST settings verify that C:\program files\steinberg\vst plugins\powered plugins or at least C:\program files\steinberg\vst plugins is in your VST scan path.
If it already is then Reset then Rescan.

Hello,
Yes - as i stated in the OP, at one point I actually cleared everything EXCEPT c:\program files\steinberg\vst plug ins\powered plugins (as well as the default shared utilities file). All of the UAD plug ins that are located in this location loaded - except the  bx V3. The people at UAD are stumped (we went through the scan procedure several times, I uninstalled then reinstalled UAD, made sure that the plug in was present and licensed in every possible, necessary location and verified that the VST scan path was accurate. I also deleted and reset all of my preferences in SONAR). For some reason, the scan will not allow the V 3. The only way it "sees" it is as an excluded plug in which, of course, I cannot load. I just hoped that someone had had a similar experience. I can't be the only person using bx_digital V3 in SONAR Platinum and wanted to hear from anyone who had it, to see if they had encountered any difficulties in installation. Thank you for the suggestions.

nickl23
For some reason, the scan will not allow the V 3. The only way it "sees" it is as an excluded plug in which, of course, I cannot load.

If it shows up as excluded that's your problem - UN-exclude it.
Excluded plugins by definition won't show up in your menus.
 
From: https://www.cakewalk.com/Support/Knowledge-Base/2007012959/My-new-plug-ins-dont-show-up-in-Cakewalk
 
If you are confident it is properly installed, then the plug-in may be excluded from your plug-in lists.  To check:

1. Click Tools | SONAR Plug-in Manager.
2. Click “Excluded” or “Show excluded” in the lower left. 
3. Highlight the type of plug in the “Plug-in Categories” list on the left.  If your plug-in is excluded, you should see it in the right column.  Highlight it and click “Enable Plug-in.”