computer not finding scan tool when plug into truck

[plumber1]

I have had efi live for two months the first time I tuned my truck worked great now I plug the v2 ito truck the computer into the v2 and turn truck to on and it cant find anything it says check cables and try again please help

[joecar]

Hi plumber, see here: A-lot-of-PID-s-missing (http://forum.efilive.com/showthread.php?16939-A-lot-of-PID-s-missing)