Most of you must be knowing that, few months back there was a nice tie up between Rhino & Alibre for internal pipeline through which, you can open Alibre design files directly in Rhino and use Rhino's capabilities to edit them (surfacing power) and update them in Alibre almost in real time. The same was applicable reverse way.
All of a sudden Alibre has stopped the development of the plugin I guess, It no more supports Rhino 4..... why don know!
I had written to Alibre for the same ................but no reply...........!
Speaking technically it is amazing combination but something has gone wrong in backside I guess!