let's try if someone has a solution for my problem.
i recently updated my OS X system to the version 10.11.4
in the last two years i used to connect a gps
usb device (navilock NL-454us) to Open cpn
as a support while sailing.
but, since my operating system update, i couldn't use anymore my gps
device, it's like my computer doesn't even read the gps usb device (even although it "lights up" with its blue light).
i tried to update open cpn
to the latest versione (4.4), but it won't work anyway.
thank you all for your help, if anyone knows something, please let me know.