Sorry I was saying mgscript.exe which is wrong, but I was indeed using the "MGC PCB Command Window VX.1.1"
Is this a true or false statement?
I should be able to use the "MGC PCB Command Window VX.1.1" utility to run my script with no modifications other than updating the references to the new dlls. This script worked fine in the 7.9.4/5 environment.