Cubase AI crashes every time

Bought a Yamaha MOXF8 and got a free DL of Cubase AI with it. Have connected the Yamaha to my computer via USB. The computer is a MacBook Pro running the latest OS 10.10.4 with 8G of RAM. I have tested my MIDI setup with Audio MIDI setup and it fires as it should. But every time I try to record MIDI using Cubase AI, the software crashes. Even just a 4-bar, 1 line ditty. I thought this software was specifically to run with the MOXF8. Very discouraged. Tried to create a help ticket at Steinberg support and their web site kept quitting on me. Any suggestions?

Hi and welcome,

Could you duoble-check, you have the latest Cubase AI 8 update, please? You can download it here.