[MCL-2207] Launching Error

Put the summary of the bug you're having here

What I expected to happen was...:
I Sign In, And Click Play, And It Should Lead Me To The Normal Game.
What actually happened was...:
I Click Play, The Green Bar Appears Over The Bottom Bar, It Hits The End Like It's Downloading Something, And Then It Stops. The Launcher Just Sits There, And I Can't Click Play Again.

Steps to Reproduce:
1. Open The Launcher
2. Sign In If You Haven't
3. Click Play
4. It didn't load for me

This is the Dev Console- Scroll Down

[16:30:50 INFO]: Job 'Version & Libraries' finished successfully (took 0:00:00.218)
[16:30:50 INFO]: Download job 'Resources' skipped as there are no files to download
[16:30:50 INFO]: Job 'Resources' finished successfully (took 0:00:00.000)
[16:30:50 INFO]: Launching game
[16:30:50 INFO]: Looking for old natives to clean up...
[16:30:50 FATAL]: Fatal error launching game. Report this to http://mojang.atlassian.net please!
java.lang.NullPointerException
	at net.minecraft.launcher.GameLauncher.cleanOldNatives(GameLauncher.java:350) ~[launcher.jar:?]
	at net.minecraft.launcher.GameLauncher.launchGame(GameLauncher.java:192) ~[launcher.jar:?]
	at net.minecraft.launcher.GameLauncher.onDownloadJobFinished(GameLauncher.java:517) [launcher.jar:?]
	at net.minecraft.launcher.updater.download.DownloadJob.startDownloading(DownloadJob.java:80) [launcher.jar:?]
	at net.minecraft.launcher.Launcher$1.run(Launcher.java:168) [launcher.jar:?]
	at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [?:1.7.0_25]
	at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source) [?:1.7.0_25]
	at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.7.0_25]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) [?:1.7.0_25]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) [?:1.7.0_25]
	at java.lang.Thread.run(Unknown Source) [?:1.7.0_25]