The Battlefield-1942 MDT gamepack is from : http://www.planetbattlefield.com/mdt/ At that adress, they have a forum : http://www.forumplanet.com/planetbattlefield/mdt/
Unfortunetly, the CONTACTS link is empty.
I would recommand you post in the forum asking for help. I suspect that the MDT is based on an old GMAX version. But then again, I never used it, nor seen it.
There is one old GMAX forum user that has used this MDT alot. His name is D_Fast. He doesn't come here often nowadays. This sort of gamepack isn't made by a game company. It is made by a group of Battlefield-1942/GMAX fans. | 
