I run a Magellan Meridian color and gpsbabel 1.2.3 on windows 2000
When I try to transfer data from my GPS to a file,

gpsbabel -i magellan -f com1 -o gpx -F essai.gpx

I get the following message
MAGPROTO: No data received from GPS.
The GPS is working correctly and transfer can be done on com1 frome other programs.