Ok, so... I've been searching the web all day and have found no answers(Other then I have to wait) to the error I'm getting when I try this(It's the FFXI-3100 error)

I believe the problem to be the above as it didn't start until I tried to set my account up on this computer while it continues to only work on my main.

I am not asking about having two characters on at once, I just want to play my account on this computer while I am away from home