Thanks for the feedback…..so, it happened again this weekend. I have a streaming service for karaoke called Karafun. I have this program open while I have DEX 3 open. Twice, when I double-click on the secondary screen to minimize the DEX 3 screen to move it out of the way so that the singer can see the Karafun screen, when I go back and move the DEX 3 screen back to the secondary screen, then double-click, the program crashes and closes. Program plays fine when it is open with ITunes, but seems to have issues when I move the screen around or double-click on it to move it away from the secondary screen.