Trying to change some parameters on transmission. Guy from transmission shop called said he rebuilt trans. on truck and replaced tcu with oem gm tcu. He has equipment to flash truck with factory program. Said he drove truck and all is fine but he needs to keep torque converter from locking up in gears 1-4. I can see trans in editor, made changes and tried to write back to truck and all I get is "unlicensed vehicle". It never prompted me to license file when I read from truck, wouldn't prompt me to license when trying to write. Anyone ever run into this ? info log and all is on another computer or I would attach.