I've been busy and haven't had a chance to properly test Crossover 10.1 until now, so these observations are specific to 10.1.1. I don't know whether the changes I'm reporting came in 10.1.0 or 10.1.1. With that said, there are a couple of promising developments:
Crossover 10.1 appears to have solved a minor annoyance with the way that Estimator displayed popup menus. (It would highlight entries on the way by, and leave them highlighted even though they hadn't been been selected). It now behaves normally. A nice surprise!
Attempting to print still generates an error, but it no longer completely locks up the bottle.