I Tried this for my problem, and It half worked, It loaded the white outlines of mobs the sun and blue sky, but that is it, Everything loaded on my minimap, but I am trying to find a solution.
Mine ran into an even bigger problem. I went into it after reinstalling Technic launcher and after it shows Mojang the screen goes white, and locks up, only way to close it was to turn off the whole computer, man if this broke my computer, fuck it.
Dude You dont have to be a complete asshole, this guy probably doesn't even know what port forwarding is and it used to be only with hamachi so maybe he doesnt know about what you can do now.