With the latest version of the bt-hid-connect script, I was finally able to find and select my Think Outside Keyboard in the gui. The bluetooth icon does turn blue when I type on the BT keyboard, but I cannot generate text.

Upon running bt-kbd-remap in xterm, I get the "No external keyboard found!" warning.

I tried to run bt-hid-connect in xterm as you requested, but I get "not found" in response. Should I be in a certain directory or run as root?