I've set up a bunch of activation events so that when one button is clicked all the lights for the other buttons remain red and the light for the clicked button turns green.
The process is something like this:
-click button
-activation event to red light so that it creates actor the green light right on top of it.
-click any other button should turn that green light to red
what I find is that the light for the button at the top of the stack stays on no matter what and if I click any other button two times in a row, then the light stays green for each of those buttons.
Here's the zip file with the ged and image files:
http://www.hodgepodgestudios.com/files/MISCELANEOUS/Dr_DeGroot.zip
The problem has to do with the six buttons on the left marked "Exercise #"
Thanks!