Opening Mixconsole hangs Cubase on new mac

Hi folks,
I just moved to a new macbook pro with Yosemite. Using latest update 7.5.4.

This is a new install computer with no vsts except Komplete.

Opening any project (even brand new with no tracks), if I open mixconsole, then Cubase just hangs. I get the spinning ball of death and I have to force quit Cubase. Opening Mixconsole 2 or 3 doesn’t do this. For now, I have had to change my hotkep F3 to open mixconsole 2 instead of the main one. Anyone else dealing with this?

Hmm-I guess this isn’t a common issue people are having? I’ll try and reach out to customer support