When I connect to my game through localhost/127.0.0.1, the game loads fine - But when I try to connect through my external IP, my router's IP, my Hamachi IP, OR my no-ip address, (I used each of these separately, not all were active at once) it says "ERROR" across all the buttons on the main menu. My friend cannot connect either. Pressing the buttons does nothing - The only one that works is the one that is supposed to be "Registration", and it opens the registration page, but EVERYTHING says "ERROR".
I forwarded port 4000, that's what it's running on. I think it could be an error with sending data - does anyone know how I could fix this?