Script Files Issue

i have a script file that contain couple line positioning. So far we ran it on 5 computer's with the version of autocad LT 2000 and 1 Autocad 2006 (full version). only 1 of the Autocad LT 2000 work. The rest position some line at random spots. but if i stop the script after a block insert as an example and i check in the script window and the parameter are good but hte position is wrong, i then just retype manually the command and it work