I have an old Garmin Pilot III that I use with Navbox Proplan 5. Due to its age, it has a serial port connection, so my Windows 7 64 bit machine has a USB to Serial adapter running as COM-5.

Navbox uploads fine, so I know the hardware aspect is functional.

I have tried the Skydemon eval, but when I try and upload the route to the Garmin, (after clearing any existing routes on it), the name of the route goes over, but nothing else - there is no route information and no waypoints.

I'm either missing something obvious or there is a compatibility issue with the Garmin. The unit was replaced by Garmin in the last year after the old one developed a fault so it has the latest firmware.

Are there any other owners of a Pilot III that are successfully uploading to their GPS from Skydemon, and if so, did you have any problems initially?

Any suggestions welcome!

Cheers

Ed