You may need a 32 bit version with a TIV icon to connect. Many versions have bugs (why they make new ones). Ver 2.4.1.1 is very stable and should connect. Do not use a 2.4.1.2 ver, nasty bug in load weighing can shut down car. I believe with the software upgrade it becomes a ver of a Tac 50. Soon everybody will be needing a 2.7.9 or .10 version to take care of tac 32's, or call Thyssen to fix.
