My launcher wont even go to the login screen!

[Demonice430]

Launcher Version: 253

Operating System: Mac OS X

Java Version: i dont know

Antivirus Program:

Description of Problem:

The Launcher wont start and i have tried everything! It happened when i set my builds to beta.I can't get it to work. PLEASE HELP

Error Messages:

Error Log:

[danny hicks]

iv had the same experience except I run on pc iv got plenty of comput power with my 8 core processor and I do have latest java but it wont load it goes to where it the tektite launcher with the loading green bar under it tipe of screen and wont load it goes away and wont start up any advice

ps my launcher is up to date

[dbdDemon]

i also have the same problem, hopefully someone has an answer