First you need to make sure that 378 is the correct adress. Second you say that the controller work on another computer, that's good. The problem could be that the parallelport on this computer only outputs 3.3V and the controller needs 5V (laptop by any chance?)
If you have a voltmeter please meassure between ground (pin18-25) and pin2 (X-DIR) of the parallelport. Then jog in one direction, you should see very close 0V when jogging in one direction and close to 5V when jogging in the other.