Sorry :/
I had the bad idea to host stuff for a pretty popular site on my dropbox and got too much traffic. I'm currently moving everything so hopefully I get to this soon enough, although as said by geod, 3DNes V2 can't use 3DNs made with V1 so if you really want to play this you are sadly gonna have to use an earlier version of 3DSNes. Also I officially won't be updating this anymore; lack of compatibility with V1 3DNs killed all the small bit of motivation I had left.