Dennis,
With the Telnet window open, and connected to dxc.kn4f.net, and the spot log open, and the rotor control window, and the world map open, I have the problem every time. Seems like closing one or more of the windows sometimes keeps it from crashing. Maybe it has something to do with how many windows are open.
On my setup, the spotlog, telnet window, world map, and rotor control are separate windows I can drag away from the main logic window and put on a different monitor.