Hi
On Mac OS 10.7.5 here.
Just updated to MR Tools 1.7.4. Then Installed Cubase 7 and the 7.0.1 hotfix.
Went into AutoMap and deactivated ALL plug in control so nothing was wrapped.
Restarted and sure enough when Cubase 7 loaded I had no “Hardware” items in the Mixer Rack or The Devices Menu.
So I quit the app, re-launched and from the Templates page loaded the MR816 csx Multitrack template. This fixed the issue immediately. I have the old "Hardware: item in the Devices menu ( though they didn’t update the look of the panel … very V 6! ) and in the Mixer Rack.
The Ext FX ( plug in ) mode seems to work fine once the 816 was configured from the Hardware panel.
Now to figure out the new mixer/Control room… wow!
Best
Lee