Guild wars 2 launching

Hey all,
I am having the same problem. I can't get the second account to load up. I can manually get each to load at different times but not at the same time. It almost seems like they are trying to load the same .exe . I made a copy of the same GW2 folder in my (x86) folder. Is there another copy that needs to be made somewhere else? I was wondering about the .dat you all were talking about.

I am having the issue. I am completely new to this and i got it to work on two computer but I would like to have it work on one. I created a new folder and copied the .dat file into it, but the .exe tries to use the .dat from the original folder. I would appreciate any assistance anyone can give me and the poster above.

Ok I figured out what part of the problem was. It will only load the second account after the first one has gone to the character select screen.