So I've upgraded my Denon receiver's firmware, and the plugin still works... kinda' sorta'.
Before the update to 7.2, it seemed to be somewhat degraded.. I can send a command and have something happen, but the 2nd command often doesn't work... seemingly in some kind of "time out" phase.. and then as I recall sometimes a whole bunch of commands that may have been in a queue happen.
Bottom line, I'm hoping Perry can soon take a look and maybe do just a bit of tinkering on his plug. I'm kind of working around the bugs, but it would be great to have it fully functional again.