I recently started to use my Magellan Sportrak Map in conjunction with my laptop for navigation on long trips, but am experiencing difficulties. After accessing the GPS Log and turning NMEA on, Mapsend appears to be working fine. Usually after about five minutes the program will crash and my mouse cursor will start dancing all around the screen. I originally thought this was initiated by my screensaver so I disabled it temporarily. Now instead of a dancing cursor my whole machine shuts down due to a "system dump???". I have tried it on another laptop and the same scenario occurs. If anyone has experienced anything remotely like this I would appreciate the input. Thanks.