This is working great with 4.2beta1!
Only two small (very small) issues:
1) After installation, the 'Rebooting Crossover Office' message comes up, and the installation starts up again (at the beginning!) This isn't a big deal, as clicking 'Cancel' leaves you with a good installation. It's just a minor glitch.
2) While the entire interface is a bit sluggish, the graph on the main page is really, really, REALLY slow. (it takes about 20 seconds to draw on my system.) I don't use it, and it is easy to turn off, so for me it is not really an issue.
I'll post here if anything else pops up with extended use.
MWM