Okay, well... None of the above worked, but I did some monkeying around on my own. I figured since the old file worked and the new one doesn't, I'd download the old file and see what happened when I tried to connect. Naturally it didn't connect, but it at least got past the "initiating connection" part.

So after a bit of head scratching, I just decided to edit the old file with the new info and... Voila. NO idea why that worked, but it did. Considering the new file works on two of my laptops, I'm still thoroughly confused but I'll take it.

Thanks for all your help and suggestions!