1 pointNow on to the sluggish behavior problem. Can you reach the examples in the Example Finder? In the Example Finder search for QControls and test each of those out and let me know if it is all of them or just the Tree Selector one. This will help me narrow the problem down. @X___, I'm sorry this has been a bad experience for you but thank you for your patience and for being a troubleshooter for me. With your help we can make this event better.