I have upgraded my Mac to Yosemite and I hooked up my HD500x and JTV to my Mac to do some tinkering and I notice I cannot assign controllers any more. I'll pick the effect from the drop down then the info flashes in the program and goes away as if I did nothing.
I also noticed that when I make changes and see the patch has an asterisk by it, if I hit send selected it does nothing. I see the information is not reaching the HD500x as it is not getting message "sync in progress" and the asterisk never goes a way.
I updated to the latest HD Edit program, I have shut everything and down and reconnected but still no use. This is a pretty big deal, since without being able update the patches via HD Edit the program is pretty useless.