I am confused. You said its a fresh clean installed. You installed Windowblinds. Reboot. No problem? And Apply skin? Which skin? Any specific skin? Is the skin known to be good? Have you tried skin that come with Windowblinds?
I asked you to do the purge is because I want to make sure you have a good install of Windowblinds. The purge will only remove Windowblinds items. Your Windows will not be effected. Once the purge be done. Your Windows should be clean from Windowblinds. Reinstall and reboot again. To see if the problem still the same. If it is the same, than something else is blocking Windowblinds from working. We will recommend something else then.
Thank you,
Basj,
Stardock Community Assistant