I have a problem where I downloaded 1.6.4 forge and I went over it a few times but now when I start up the minecraft launcher and I set it to 1.6.4 forge and press start, nothing happens. No minecraft 1.6.4 loads up. I tried some other of my forges and they all worked. I've re-downloaded it a couple of times and all of them didn't work
I was able to fix it myself but I now face another trouble. My friend is trying to join my server but it keeps on saying this when she tries to join, and she has the mods needed to join I've made sure.