I've experienced problems with WindowsBlinds and Windows 8.1 at startup also. In my case when I change to any other window design from the basic Microsoft provided design upon reboot I attempt to login and my computer brings me right back to my launch screen. It doesn't matter how many times I try to login, Windows brings me right back to my launch screen and doesn't bring me to the desktop.
I end up having to restore my computer to an earlier save point, which is quite annoying to have to do.
WindowsBlinds is one of my favorite Object Desktop programs but I can't use it.
Other components of Object Desktop do not have this issue.