Layout problem

I have used Mainstage since it came out and it is a great program. This latest version seems to have a glitch however. I cannot pull in my controls from the control pallette to design my layout. The control”disappears” when I drag it to the layout area. I have re-installed MainStage, restarted computer, deleated preferences, changed user, etc. No luck. Additionally, I have the same issue on 2 computers. I saw another post referencing this as well. It is a fantastic program and well worth the $30, but I’m hoping this issue can be resolved as this makes designing and constructing your layouts impossible.

rapmd about MainStage, v3.2.4