Versions of Keep Track prior to 2.1.4 may produce this error if the program's settings become corrupted. To fix this error, un-install Keep Track from your PC and PDA, and then re-install with the latest 2.1.4 version from our downloads page.

Before un-installing, back up the .ATF file containing your data. On your desktop PC, this file is in C:\Program Files\Ilium Software\KeepTrack\; on a Windows Mobile PDA, it is in \My Device\Program Files\KeepTrack\