FooBoo that is an annoying problem.

 When you have uninstalled it, did you run a clean up program like CCleaner and then reboot before reinstalling and then reboot one more time before trying to run WB?

How are you trying to install WB, using Stardock Central or Impulse?

FooBoo I'm going to suggest that you download Impulse from here  http://www.impulsedriven.com/ 

Try installing WB using Impulse.  If you are not familiar with it, do a little reading on it.  Think of it as a fancy download installer.

Okay, downloading WB through impulse and installing it doesn't solve the problem, can anyone still help me? ):

It's alright, you tried (: Tyvm

Yes, it was disabled during the install.

Okay, will try, thanks.

Well actually, I might be doing it wrong, is there certain way to install WB using SDC? Because All I can do is download the demo, and install it via firefox and the .exe file, I can't install it via SDC.

Just recently ran into the same problem mentioned in the original post.  But my problem is solved for the time being.

What I found is that for several versions now, I cannot update WindowBlinds without running into this problem.  Platform is Vista Business w/ SP1 x86 running Impulse for managing app installs and updates.  I've no anti-virus or anti-malware programs running in the background.  In fact, there isn't anything out of the ordinary that should interfere with software installs.

What I ended up doing, which seem to have worked around the persistent problem, is uninstall WindowBlinds, reboot, install WindowBlinds, and reboot.  But why should I have to go through all that process when a mere update went fine?  It's tiresome having to go through this process just to update it.  Either WB or Impulse needs to handle the update process better so I don't have to run into this problem again.