looking over the errors in your console.log, all of them seem to be caused by your addons.
so try this:
start singleplayer mode - click the addons button. at the bottom of that window is a button 'None' click that.
start your map. run around a little bit.
quit.
then try joining multiplayer.
if that works .... then one of your addons is causing you to crash, and you will need to start disabling them until the crash goes away.
if it still crashes -- post your console.log again.