I have now got Cubasis to work with Animoog. I rebooted my iPad. Ran Cubasis first. Set track output to virtual midi in the inspector. Booted Animoog set it to Cubasis for midi in and omni until I got it working. Turned off unison and turned background audio on and it worked first time
I then set Animoog to its own channel and all was well. I suspect however that its taking up a lot of resource.
Hope this helps.