I also have AC-7 Core running, but there is a free version of V-Control so I installed that. Seems to be running and it looks like it would be more useful than AC-7 Core because you can change the focus to any window running on your computer, including plug-ins. The only thing missing in the instructions, since they have not yet been updated to include SONAR, is that you must choose "Mackie Control" as the control surface in SONAR's Edit, preferences, Control Surface. I kept looking for a V-Control or similar entry, and did not find it. And I'm still looking for a labelled diagram.