thesimsnappleguy

HI so i have a problem with my attack of the b team whenever i click play the launcher hides and then reopens again within 2 seconds and dosent even show the mojang logo, it used to work but now dosent please help im on Mac OS X 10.9.2 which is latest version,video of what happens below and console log: Console Log: http://pastebin.com/S9dEvhi6 Video: Please help that would be great! Thanks!