Ok...uninstall both of them...Save your Skins to another folder...Clean out both Directories....ObjectDesktop>>>WindowBlinds...and Stardock>>>WindowBlinds.
Reboot...Both WindowBlinds will still be on the list...Install WindowBlinds 4 [Beta] from SDC...reboot again.
This is how i made one of the WindowBlinds to work correctly with out the other