Mike, are you sure you are using the lastest version of Waces Central? That will also throw curves into the mix.
 
My next suggestion is to make sure you have the updated WC. Just go to
 
 https://www.waves.com/downloads/central and get the latest. 
 
Install it.
Then do as mudgel suggests to clear your cache.
and reinstall Waves and see what happens.
 
If that doesn't work contact Waves support. They are really good about helping out. You may have found some type of bug. You never know. : )

Thanks again Grem and Mike.
I do have that latest WC latest update, that is when/why this all started.
Again (and hopefully more clearly), when I open SPLAT it scans my plugs and I get a window asking me to "select Waves 9.6 Plug-Ins folder"
Yet nothing I've tried shows up in the lower window where I choose to select it, regardless of what I type in or point it to. That is my stall point.
Michael

Try to reset/rescan your plugins in Sonar. Sonar is still looking for the old plugins and thay are not there anymore. 

AFAIK, when it comes to Waves plugins, only the WaveShell DLL files are scanned by the DAW (and not the individual Waves plugin DLL files). 
 
I found my 32-bit Wavesshell DLL files here:  c:\program files (x86)\vstplugins and...
my 64-bit Waveshell DLLs here:  c:\program files\vstplugins
 
These are the only Waves locations I have in Mixcraft's VST preferences, and all 20 or so of my Waves plugins show up and work just fine.

I would just call their tech support. I've had similar issues and they were able to solve them for me fairly quickly and painlessly.

Well, thanks guys.
 
I opened SPLAT and ran the VST scan. I get to the same place either way and obviously I don't know what to do once I get there. This is the window I get regardless and none of the Waves folders seem to be the "proper" "answer.
 

 
I've tried everything but the individual dlls. Maybe that's the trick ...... Whatever I click on/put  in the top pulldown, doesn't appear in the lower one, so I get nowhere over and over.
 
I'll try Waves support
 
Michael

Did you try the reset?
 
Preferences (make sure Advance is checked) the VST and in the middle you will see the reset button. Hit that and let Sonar rescan everything. 

All I can say Mike is that you didn’t follow my instructions to the letter.

It’s just what you have to do. I didn’t discover this because of some special personal gift, I got it from Waves support after getting that error quite a few times. Seems I wasn’t so good at following instructions in running Waves Central. Now that I’m particular about doing it Waves’ way I don’t get that error at all.

Agree with Mike. If you have done what Mike has suggested and you still get the 'look for folder' error, reset/rescan your vst.

I did the rescan/reset as I mentioned a couple posts back with no change, but I did not do all the uninstall steps like Yair Gur Lavi just wrote me from Waves;
"

This issue may occur due to some old Waves residues on your system.
 
I suggest a complete uninstall-reinstall.
First, uninstall:

1. Launch Central.
2. Go to Install > Uninstall, check mark both boxes and click Uninstall.
3. Go to Control Panel > Programs and Features and uninstall Central.
4. Go to C:\Program Files (x86) and delete the Waves folder.
5. Press [Win key]+R, type %AppData% and hit Enter.
6. In the Roaming folder that shows, drag the Waves Audio folder to your desktop.
7. Press [Win key]+R, type %LocalAppData% and hit Enter. In the window that shows, delete the Waves Audio folder.
8. Press [Win key]+R, type %ProgramData% and hit Enter. In the window that shows, delete the Waves Audio folder.
9. Delete any WaveShell files you find in the following locations (if exist):
   • C:\Program Files\Common Files\VST3
   • C:\Program Files (x86)\Common Files\VST3

 
Now to re-install:

1. Download and install Central.
2. Run Central and log in.
3. Go to Install Products.
4. On the left column, select Online.
5. On the middle column, click on My Products and select the products you wish to install.
6. Click Install on the bottom right."

________________________________________________________________________________
So, I'll try again! I certainly have more knowledge and understanding than I did a couple days ago. So, thanks for helping. My strengths are musical, and in SPLAT (editing, mixing etc). So improving my PC skills is always worth the learning curve.
I'll post back once I get to go through the steps later today.
 
Michael