Unable to Load/Launch Worlds/Servers

Alright, so my game is unable to load singleplayer worlds, even after several minutes of staying on the loading screen. I have made sure that my graphics card drivers are fully up to date, I have uninstalled and reinstalled the new launcher multiple times, Rather annoyingly, after several minutes, the only method I have that ends the program is an End Task command, which also does not generate a crashlog.

I was, however, able to get a hold of a launcher and load log.

http://paste.ubuntu.com/24001714/

Help, please.