I'm having the same problem. Installed the 1.3 softroot - went smoothly. I upgraded the library app, but when I tried to upgrade the launcher app I my computer does not recognize the Nook IP number.
Also, I notice that (this is new with the 1.3), there is no longer a listing of my Nook's IP address under settings. It simply doesn't show up. I'm at a loss, but I'm also getting tired of fiddling around with it.