This problem, in my experience, was caused by Vista's User Account Control not allowing Orbitron to write any new data to the hard drive. There are two ways to solve this:
1. Run Orbitron as Administrator (right click on the icon -> Run as Administrator) 2. Disable User Account Control. This can be done by going to the Control Panel, then User Accounts, and somewhere in there (I do not remember exactly since all my boxes run Windows 7 now) there is a checkbox that will allow you to turn UAC off. Reboot the computer after disabling UAC for the changes to take effect. Hope this helps. 73, Sam KC2LRC _______________________________________________ Sent via amsat...@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb