When I pin a RadDock to autohide it, and then mouseover on that hidden dock's tab, I get an ArgumentException saying that "A circular control reference has been made. A control cannot be owned by or parented to itself." From what I've researched online, it seems like this is something that can happen if there is a naming issue where two controls or a dock and its panel have the same name. I painstakingly verified that this is not the case in my code, and even started from scratch on a new form to keep it simple but still had the problem. I eventually gave up and went with the DockingManager, which for some reason works fine. I'm having some issues with performance with the DockingManager however, and since I've heard about other features contained in the RadDock that I'd like to have, I'd really like to successfully implement the RadDock. Thinking that the "Convert to RadDock" feature would take care of whatever issue I had before, I used that on my working DockingManager, but to no avail. Everything seems to work great until I hide a RadDock and mouse over the tab (note, I don't need to have my mouse directly over the tab... hovering over any part of the panel that contains the tab causes the same error). Can you please assist me in solving this? My app is C# using WinForms Q2 2009. Let me know if you need more technical data.