If you are having trouble with R-Mix be sure you have a stereo source. It wont work on mono. 

John
If you are having trouble with R-Mix be sure you have a stereo source. It wont work on mono. 

I knew it was one of the 2 that it doesn't work on. But today, and last week, I was trying it on a stereo bus (main bus actually). I'm not saying it's not possible to do anything with it. I've just been frustrated out of trying.

I threw it into the stereo master bus again today just to give it another try.  It did seem to work OK...the GUI did work.  I did a new clean install on a new HD a while back due to my old OS HD acting like it gonna fail.  I didn't install X1 or X2...but did do a custom install of each to get what plugs I wanted from each, R-mix being one of them (64 bit).
 
I'll probably just leave it alone, since I really don't use it for anything (or haven't so far).  Was just experimenting with some stuff when I came across the problem.
 
Thx for the replies.