I have been using the mount hub pro since they first came out and I have noticed simular 'glitches'. With my set up I find that I have to start the mount Hub Pro software with the USB cable attched and then provide the 12v power after the software has started. If I don't do this then the software will not allow any devices to connect. Strangley if you have connected for the first time and if you then have to restart the computer you don't have to do this again as it will connect even with both cables attached? I have had the same thing also with the camera dissappearing in Maxim. After restarting it also reappears just fine. I can only hazard that it's a software thing and I tend to work around it if I can. I would imagine that this would not work well fully automated.
Not withstanding these quirks I really love my MHP.
There have been only a few updates to the software and the latest would be v 1.52
http://www.hitecastro.co.uk/support/..._Setup_152.exe
All the best
Paul