Jerry, I had a similar problem a while back.
If it helps, here's the transcript of my to and fro with Waves Technical Support which got me up and running.
*************************************************************************** I own R-Bass, CLA Signature Series and TrueVerb.Since I purchased and installed TruVerb about a week ago, I now find that every time I boot up my PC and launch SONAR, none of my Waves plug-ins are available.The only way I can get them back is to uninstall them and then reinstall from the woli.exe I downloaded. *************************************************************************** Thank you for contacting Waves Tech-Support.
When running the Woli on a PC, on the product check box list, you need to make sure that all your plug-ins are checked in the list. Unchecking a plug-in from the list would uninstall the plug-in.
At this point, do you have all your plug-ins available?
***************************************************************************I have purchased the following Waves plug-ins:> Renaissance Bass> Chris Lord-Alge Signature Series> TrueVerb I purchased TrueVerb about a week ago, and prior to that, I had never experienced any problem whatsoever with R-Bass and the CLA VSTs. I downloaded the Waves installer and followed the instructions to install TrueVerb on my system. It then worked perfectly inside SONAR, as did R-Bass and CLA (I have numerous instances of these plug-ins on every project). However, when I next booted up my PC and opened SONAR, I received warning messages that all my Waves plug-ins failed to load. A typical warning states: 
I receive the same message either when I try to load a Waves VST, or when I try to open the UI of a Waves plug-in already inserted into a project. After I close the message above, I receive this error message: 
I could understand these messages if I'd deleted or moved the WaveShell dll from my VST folder, but I've done neither. In fact, SONAR completes a VST scan on start, and when I check my VST Manager, all the Waves plug-ins are listed as available. However, in my Layout, these plug-ins are there, but are all greyed out. The WaveShell-VST 9.3_x64.dll is sitting there in my VST folder, but SONAR just isn't seeing it for some reason. The only way I can get them back again is first to delete them all and then reinstall them again from the 9.3 installer. This is the process I go through, in case it help you fathom this out:Using Windows Programs and Features, I uninstall "Waves Complete V9r20" to completely remove it from my system.I run a VST scan in SONAR to ensure it hasn't found any remnant of the Waves plug-insI run the installer: "woli.exe" (making sure to Run As Administrator)I select "Version 9" from the options availableI allow "Waves Complete" to be installed to C\Program Files (x86)WavesI select my VST folders as the destination for the WaveShell VSTs (as I can't see any way to prevent the 32bit version installing, I allow it to install to my 32bit VST folder, even though I never scan this folder)On the Select Products screen, I select: Waves License Centre; CLA Artist Signature Collection; Renaissance Bass; and TrueVerb - and then I click Install.I open SONAR and all the Waves plug-ins are working again. I'm guessing I must have done something incorrectly when I added TrueVerb to my system, as my other Waves plug-ins had been running flawlessly before. *************************************************************************** You did everything as you should. I assume this issue is caused from some left overs in the registry from former Waves install.
Please try this workaround:
Note: If you have created your own presets, saved to a preset menu, please drag the 'Plug-ins Settings' folder, located at C:\Users\Public\Waves - to your desktop.
Also, if you have any saved IR impulses or presets - drag the IR1Impulses, IR1Impulses V2 and Acoustics.net Impulses folders located at C:\Program Files(x86)\Waves\Plug-Ins to your desktop as well.
After the new installation, drag these folders back to their original locations.
1. Go to Programs& Features and remove anything of Waves.
(Start > Settings > Control Panels > Programs& Features)
2. Go to Program Files(x86) and delete Waves folder.
(C:\Program Files(x86)\Waves)
3. Go to the Start Menu > Search > "for all files and folders".
Search for the term "Waveshell". Delete any Waveshell file your system finds.
4. Go to Stat menu>Run. Type in %appdata%
it will open the following location:
C/Users/Current User/AppData/Roaming
inside this location delete the Waves or Waves Audio folder.
5. Download the V9r18 plugins installer
from this link 6. Run the V9r18 installer in the welcome page (the first page you see) select “Uninstall”
(this will hopefully clean the registry)
7. When done try again the
Woli V9r20 to install your plug-ins, exactly like you did before
Let me know how it goes and if you need any further assistance