Funny thing with this one... At first I could not move the sliders, only the circular buttons. I almost gave up and then I found I had to move the sliders with my other mouse-button.
This will probably go unnoticed by most, and got to me because I am left-handed and have configured my mouse to swap buttons for left-hand use. It's probably hard-coded to use the right mouse-button for the sliders, which is ok for every right-hand user.
So, nothings broke, it all works, and it's a very nice plugin, I'm loving it on my drums. Now my pinky also get's some mouse-training :D.
This is not supported/developed anymore, am I right? Can live with it, no problem. If any-one else runs into this: try the other mouse-button.
It's only with Dominion and Endorphin. I also have the Fish fillets trio, and they work correctly. Perhaps also with other Fish plugins, but I only have those.