minecraft no longer works

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#1 Apr 27, 2014
mewtwoy
mewtwoy

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- Mathematical Dessert
- Location: Whitehorse
- Join Date: 3/3/2011
- Posts: 712
- Location: Somewhere Wet
- Minecraft: Chris
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i just heard about the 1.7.9 update and i went to update, now it dosent even work

it shows this in the launcher

[10:49:35 FATAL]: Fatal error launching game. Report this to http://mojang.atlassian.net please!
java.lang.NullPointerException
at com.mojang.util.UUIDTypeAdapter.fromUUID(UUIDTypeAdapter.java:22) ~[launcher_mcpatched.jar:?]
at net.minecraft.launcher.GameLauncher.getMinecraftArguments(GameLauncher.java:386) ~[launcher_mcpatched.jar:?]
at net.minecraft.launcher.GameLauncher.launchGame(GameLauncher.java:281) ~[launcher_mcpatched.jar:?]
at net.minecraft.launcher.GameLauncher.onDownloadJobFinished(GameLauncher.java:627) [launcher_mcpatched.jar:?]
at net.minecraft.launcher.updater.download.DownloadJob.popAndDownload(DownloadJob.java:120) [launcher_mcpatched.jar:?]
at net.minecraft.launcher.updater.download.DownloadJob.access$000(DownloadJob.java:12) [launcher_mcpatched.jar:?]
at net.minecraft.launcher.updater.download.DownloadJob$1.run(DownloadJob.java:89) [launcher_mcpatched.jar:?]
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [?:1.7.0_55]
at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.7.0_55]
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) [?:1.7.0_55]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) [?:1.7.0_55]
at java.lang.Thread.run(Unknown Source) [?:1.7.0_55]

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