I bought Sins this past weekend (great game, btw!!!) amd included was the My Colors theme. When I applied it, the start menu and taskbar were blacked out, or invisible (it changed from reboot to reboot). I opened up WB and selected the Sins (Vista) skin and it fixed the problem. Anyone have any clues as to why? Here's my system info from WB:

WindowBlinds version : WindowBlinds 6.1 (build 51 x86)

WindowBlinds is installed correctly on this PC
WindowBlinds appears to be activated on this PC
Your machine supports per pixel borders on WindowBlinds skins.

(SyncMaster 731B/731BF/731BA/730BA(Analog)) 1 is attached to NVIDIA GeForce 8500 GT

Wblind.dll      2008/03/17 12:45:20
Wbsrv.dll      2008/03/11 06:56:10
Wbconfig.exe      2008/02/20 14:52:33
Wbload.exe      2008/02/14 12:05:14
Wbhelp.dll      2007/08/27 12:54:07
Wbui.dll      2007/12/01 17:43:05
Tray.dll           2007/09/12 18:58:21
Screen.exe      2008/01/11 13:14:18

I'm running XP SP3 and have no issues with any other WB. Also, nVidia nView is disabled (I know it doesn't play well with WB, so....) and my drivers are all up-to-date.

Any help would be greatly appreciated. Thanks all!