I'm seeing a bit of an issue with the last two betas (noticed it on the last one, figured I'd wait and see if it was fixed in the current one, but no such luck).
The explorer background transparency isn't working. All other transparent WB parts (titlebars, menus, etc.) work fine, textures work fine, etc., but the explorer background is always opaque (it does show the selected background texture). Even worse, the more I set the slider to transparent (below the default settings, at least), the darker the background becomes (i.e., if I set to maximum transparency, the explorer background is completely black).
The explorer background transparency worked fine on this computer prior to the last two beta releases, and nothing else was changed in the interim (this issue showed up specifically when I upgraded to the next beta version of WB7).
Additionally, I also don't see the difference between the active and inactive explorer window backgrounds (they appear to be the same, regardless of how differently I set them in the configuration, and regardless of the level of transparency that is set).
Also, I have already tried uninstalling and reinstalling WindowBlinds (just in case).
The info from WB is pasted below (basically, this is a laptop, with 64 bit Win7 installed):
Your computer has a Windows Experience Index base score of
Your Windows Graphics Experience score is 3.9
WindowBlinds version : WindowBlinds 7.0 (build 228 - Windows 7 Edition) - 64 bit OS
WindowBlinds is installed correctly on this PC
WindowBlinds appears to be activated on this PC
(Generic PnP Monitor) 1 is attached to ATI Mobility Radeon HD 3400 Series (Microsoft Corporation WDDM 1.1)
Wblind.dll 2009/10/29 12:32:20
Wblind64.dll 2009/10/29 12:32:19
Wbsrv.dll 2009/11/04 09:22:58
SevenConfig.exe 2009/11/04 15:15:08
Wbload.exe 2009/10/22 06:40:12
Wbhelp.dll 2009/10/07 14:35:07
Tray.dll 2009/10/21 08:13:19
Wbload.dll 2009/09/25 07:41:29
Screen.exe 2009/11/04 09:22:01