I'm trying to communicate with the contollers on both a Bridgeport EZ Trak controlled mill and an EZ Path controlled turning center. I am using BobCad which works fine with our Fadal mill. I can download programs from both of the machines into BobCad - but I am having no luck uploading programs into them from BobCad. Any help would be appreciated.

try change you set-up in the cam side to read .cam and upload as a .cam file I've the same issue on the mx3 and I went nuts trying to figure it out also if the controller say line to short you will need to reset software value on set-up page also you need a % at the beging and end