Launcher automatically closes

Please attach the complete output of the "Development console" which can be found on the second tab of the launcher.

When it's opened: [15:13:13 INFO]: JFX has been detected & successfully loaded

[15:13:17 INFO]: Refreshing local version list...

[15:13:17 INFO]: Minecraft Launcher 1.3.11 (through bootstrap 5) started on windows...

[15:13:17 INFO]: Current time is Apr 9, 2014 3:13:17 PM

[15:13:17 INFO]: System.getProperty('os.name') == 'Windows XP'

[15:13:17 INFO]: System.getProperty('os.version') == '5.1'

[15:13:17 INFO]: System.getProperty('os.arch') == 'x86'

[15:13:17 INFO]: System.getProperty('java.version') == '1.7.0_51'

[15:13:17 INFO]: System.getProperty('java.vendor') == 'Oracle Corporation'

[15:13:17 INFO]: System.getProperty('sun.arch.data.model') == '32'

[15:13:18 INFO]: Refreshing remote version list...

[15:13:18 INFO]: Refresh complete.

[15:13:18 INFO]: Loaded 3 profile(s); selected 'koolTbyrd'

[15:13:18 INFO]: Refreshing auth...

[15:13:18 INFO]: Logging in with access token

That's the logfile after starting the launcher, please attach the latest logfile out of .minecraft/log/<DATE>.log.gz after the launcher has closed itself.