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I have been playing Minecraft for a few months with no problems. I started it up this morning, and got an error. The dark blue screen says something about a NullPointerException, the full thing can be found here. The full report in my .minecraft folder can be found here.

From my understanding, the java.lang.NullPointerException error occurs sometimes when connecting to an outdated server. However, this does not apply since Minecraft crashes immediately after the MOJANG screen. Also, note that I am running vanilla Minecraft, which is with no mods installed, which means that there are no conflicting block IDs. Any help is appreciated.

Here are my Java installations (according to Programs and Features)

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Have you done a forced update? –  SevenSidedDie Dec 25 '12 at 5:01
    
Yes, I have, but to no avail. –  Jeffrey Lin Dec 25 '12 at 13:12
4  
Try deinstalling ALL Java versions you have and install the current one from here. From what I can see you are one version behind. Shouldn't pose the problem, but multiple Java versions can be a problem, if you have them. –  Strike Dec 25 '12 at 14:18
    
I noticed your Java installation is slightly out of date. You could try updating it. –  wonea Dec 25 '12 at 14:32
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Solved it! Uninstalled all of my Java versions, installed the current one, tried again, failed, nuked the .minecraft folder, and am now able to play again. Hooplah! –  Jeffrey Lin Dec 26 '12 at 17:11
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Solved it!

As said in the comments by Strike and Wonea, I uninstalled all of my Java versions. Then, I installed the latest version of Java, but that didn't work either. Then, I nuked my .minecraft folder (after backing up my saves of course) and it finally worked!

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