I have had that happen so many times that I take measure before I even try to install something.
1. Windows key + R
2. type in %localappdata%  
3. Waves Audio
4. click on instl
5. delete the cache, I have deleted whole folder and just contents and it worked both ways
 
I don't recall if I restart my computer every time. Prob a good idea though. 

If I can get all of my V9 plugins in version V10 after paying for WUP, what would the purpose be to keep V9?
I can see why someone would delay V10 if they don't want to dish out the money right now.
 
If you already payed though I guess I'm missing the advantage of keeping both.

I gave it one more try this morning and it worked. All my v9's installed. What I think I did wrong was un the install for the offline central. I noticed in programfiles another folder called central L and there was another called central. I uninstalled everything and deleted these two folders as well as anything else related. This time I just installed waves central and went through the procedure bassdaddy gave me and it worked. I think the central L folder was causing the issue.
Thanks everyone for help. I have to say out of all the forums I go to the members of the Cakewalk forums are amazing. You want to talk about A1 support. It's right here, there is nowhere better.

Glad every thing got squared away.

Mosvalve
 
Thanks everyone for help. I have to say out of all the forums I go to the members of the Cakewalk forums are amazing. You want to talk about A1 support. It's right here, there is nowhere better.
 

Yep, that's our community!! 
 
Go BD!!

Just FYI - I've been dealing with some of the same confusing issues between versions 9 & 10.  This helped me straighten things out and thought it might help - similar to above.
 
I came across this on the Samplitude forum - someone there received this procedure from the Waves techs:
 
Doing a Clean Install -
If you have IR convolution reverb impulse files, please back up the following folders:
•C:\Program Files (x86)\Waves\Data\IR1Impulses
•C:\Program Files (x86)\Waves\Data\IR1Impulses V2
• C:\Program Files (x86)\Waves\Data\Acoustics.net Impulses (if exists)

First, uninstall:
1.Launch Central.
2.Go to Install > Uninstall, checkmark 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\VSTPlugins
•C:\Program Files\Common Files\Avid\Audio\Plug-ins
•C:\Program Files\Common Files\VST3
•C:\Program Files (x86)\VSTPlugins
•C:\Program Files (x86)\Common Files\ DigiDesign\DAE\Plug-Ins
•C:\Program Files (x86)\Common Files\VST3
•C:\Program Files (x86)\Common Files\WPAPI

Now to re-install:
1.Download the offline installer for Windows.
2.Transfer the offline installer to the offline computer.
3.Unzip the installer to your desktop, and install Waves Central.
4.Launch Waves Central and click Install Products.
5.On the left column, choose Select Offline Installer.
6.When prompted, highlight the Waves folder on your desktop and click Select folder/Open.
7.On the middle column, select the products you wish to install.
8.Click on the Install button.
***************************************
 
 
 

It's just too confusing for me to keep two versions of the plugins on one machine. Buying Gold on sale for 60 and change was a good deal. This automatically WUPPED me for 4 or so years. I had a handful of additional plugins that were WUPPED by default due to the purchase dates. Only maybe 5 others remained UNWUPPED. Not things I needed, like Bass rider and PugTec which I have other similar versions of.
 
I didn't need to WUP those plugins but decided  based on the price I was given which was significantly lower than the website price I would do it for the sake of keeping all of my plugins in one place and have them all updated. 
 
Waves then gave me a voucher for the full WUP Waves website amount. I like the way it worked out. I shouldn't need to WUP again for awhile and I have everything in V10.  IF I had been required to buy at full WUP price I probably would have waited.

Glad it worked out for you Tim. Waves got some really good plugins for the money. Best bang for buck IMO. But the install (and uninstall if need be!) is really a PITA sometimes.
 
But the reason for all of that is the Waves System. That's the little box below the title bar of the plugin window. You can save all your presets for all their plugins in any location you want. One good reason for this is to back those presets up. Also if your a big name producer and travel to your gigs, then saving your presets to a USB key is no problem.
 
So with the Waves system you can keep a copy of WC, a complete offline install package of all your Waves plugins, all of your license, and all of you presets on one USB stick that you can take with you and install on any computer and be up and running in a few minutes.
 
Downside to that is all the BS you will leave on the computer you install it on!! : )
 
I would suggest to everyone with Waves plugins to copy the uninstall instructions in the post above and keep them in a safe place. Hopefully you never need them. But if you do, they are not readily available on the Waves support pages. I can never find them anyway.

Thanks Grem for the heads up. This is exactly what I do. I put all my licenses on a usb stick that I can transfer between computers.