Well, I solved my problem. As it turns out, I have two copies of MMF Dev. 2.5 installed. My original version that I purchased on a disc and a copy that I downloaded from Steam.
It turns out that they each had a different JDK file in the general tab of the Preferences. Once I made them match, everything works fine and I can generate my APKs again.
If anyone else gets a problem like mine, at least you guys will have an idea of what to look for now.
Thanks for all your time, patience and knowledge.
Sorry to be a pain.