I'm having the same problem, except that it is not limited to Outlook any application from Microsoft Office 2007 crashes if its skinned. Doesn't matter what skin is used the MS Office program will crash soon after it is opened, I was originally using the Gloss Grey Stardock skin but tried other all with the same results.
Again everything was fine until the last update.
WB Info:
Your computer has a Windows Experience Index base score of 5.8
Your Windows Graphics Experience score is 5.9
WindowBlinds version : WindowBlinds 7.0 (build 220 x86 - Vista Edition) - 64 bit OS
WindowBlinds is installed correctly on this PC
WindowBlinds appears to be activated on this PC
(Dell 2408WFP(Digital)) 1 is attached to ATI Radeon HD 4800 Series
(Dell 2408WFP(Digital)) 2 is attached to ATI Radeon HD 4800 Series
Wblind.dll 2009/10/14 15:20:20
Wblind64.dll 2009/10/14 15:20:11
Wbsrv.dll 2009/10/09 13:56:52
SevenConfig.exe 2009/10/13 09:17:26
Wbload.exe 2009/08/03 12:38:10
Wbhelp.dll 2008/04/28 12:35:07
Tray.dll 2009/08/03 12:38:19
Wbload.dll 2009/09/25 09:41:28
Screen.exe 2009/08/28 19:21:05