Hi, I just installed Fusion 6, and if I have my Apogee Duet USB audio interface connected Fusion 6 crashes. If I unplug the interface then Fusion 6 runs fine... until I plug the interface in and Fusion 6 crashes. To get past the enter key screen when installing Fusion 6 I had to have the Duet disconnected - that's the point it crashed. 
I've used AppCleaner to completely wipe Fusion (had 5.x) off my system (which I rebuild from scratch and re-setup apps - no import of old data - about 2 weeks ago) a couple of times and rebooted in between etc - behaviour is very consistent - soon as I plug in the Duet Fusion goes boom.
Very sad, I have to chose between music and VMware fusion Please don't make me choose!!!
Crash dump attached.