Ok, I found a few problems, i believe. First off, when the game is loaded, player two can't move, but the default sprite that has initial instance can... I believe he switches back to that default sprite? Maybe, maybe not. Also, could it be that I have several initial instance sprites on the map and the default happens to be at the bottom of that list? I had that problem in the past. I'm not sure if it's it though.
Everything, as far as special functions go, are completely, and I mean completely duplicated from the sample. Agian, i don't know if it's the way they are set up, such as Save comes before load, that is screwing it up. Originally, I had the save before the load, and it was doing very strange things... now that i switched them, it seems to be okay.
If this doesn't make sense, then just say, and I'll try to explain more clearly, as for now, I'll go try and squash the bugs in the game and see if I can get this to work.
EDIT: It worked!! I got it to work finally! I figured that since I had another sprite as the very first initial instance on the map, I needed to switch that with the default sprite! And it worked! It was just like my last two player game. Here's a tip for anyone making a two player game: make the default first, then all the other sprites. I'm sorry, I'm just so relieved that i can finally continue making the game. Thanks for your help, but it's working now. I'm pretty sure I should be okay from here on out. If another problem is to arise, then I'll ask about it. Agian, thanks!