I've encountered a reproducible CTD in 5.0.11. Start any scenario, any side. Select a unit. On the Edit Task window (even if no orders have been given), set Rest to None. Immediate "CmdOps.exe has stopped working."
In fact it only occurs if no task is selected. I need to disable the controls when that is the case. I'm on it. In the meantime if no task is selected, don't hit the controls.