WB 5.5 works but not WB 6!

So WB 5.5 was working just fine so I decided to update to WB 6 via Stardock Central (I have a subscription to Object Desktop) in order to purchase the TOON-XP suite and get the free Hallowe'en suite as well. I installed the TOON-XP suite without any problems under WB 5.5. The readme for the Hallowe'en suite says you need WB 6 so I installed that then rebooted. However, nothing happens when I click on "Apply My Changes" in Windowblinds Configuration". I can uninstall WB 6 go back to WB 5.5 and everything works fine.

BTW, why does WB 6 say that it is WB 5.5 as below?

Any help is appreciated.
Brad

WindowBlinds version : WindowBlinds 5.5 (build 94 x86)

WindowBlinds is installed correctly on this PC
WindowBlinds appears to be activated on this PC
Your machine does not support per pixel borders on WindowBlinds skins.

This is because :

Your computer graphics hardware does not support acceleration of per pixel alpha. WindowBlinds requires this for per pixel alphablended borders as without it performance would be poor. Please see if you can obtain new drivers for your graphics hardware. Recent ATI & NVIDIA boards should support this feature. Onboard graphics tend not to.

It appears you have enabled limited per pixel mode, so WindowBlinds will support per pixel, but with no hardware support.

(Dell P992) 1 is attached to Radeon VE

Wblind.dll 2007/03/13 10:50:20
Wbsrv.dll 2007/03/13 10:57:52
Wbconfig.exe 2007/10/04 17:58:33
Wbload.exe 2007/09/27 17:47:44
Wbhelp.dll 2004/09/18 16:37:07
Wbui.dll 2007/09/24 19:08:06
Tray.dll 2007/09/12 17:58:21
Screen.exe 2007/10/04 17:58:24

windowblinds