Hello & Thank you very much for this plugin!
I believe I found a small bug: Whenever you export from Maya and let the plugin (!) start 3D-Coat, for some reason, the "File -> Export" feature in 3D-Coat is disabled. You have to manually go to another "room" in 3D-Coat first to make this option available again. This only happens the first time when you want to export something from Maya and 3D-Caot is started by the plugin (I attached a screenshot of the problem).