Thanks guys, and i fixed my problem, albeit probably not the best way. I looked into the unit_prod file, and was going nuts trying to figure out what the message meant, till a thought occured. I decided to install the Medmod for VI i downloaded, which i did before without realizing it only works for VI, and then re-install the medmod for regular MTW, and well the problem was fixed, I had access to all my saved games, and all. All I lost was some little changes i made to what some factions started with.

I don't know what doing what i did do, but it's fixed, and hopefully My copy of VI will be here soon.