There are devices that I can't drop on a track in my liveset. Happens to me with this device : http://www.maxforlive.com/library/device/1771/drk-livecam4-qt-quick-time-version. This wasn't the case with the windows version. I can't drag it on any midi track in Live 9.04, get the 'forbidden' sign as if I wanted to drop a midi device on an audio track. Also happens to me with the Stretta's devices for m4l (http://stretta.com/).
That is with max 6.13 on a mbp late 2012 running 10.8.4.