Windows .exe Crashing

[3v0luti0n]

hello, i was wondering if anyone can give me a fix for this ive been looking all around and cant find anything i kept crashing during my game play i thought it was just a casual kind of crash that didnt bother me till it kept happening after i went into my dingle player world this is my crash report i dont know how to fix this or nor do i know what any of this means.

---- Minecraft Crash Report ----
// Who set us up the TNT?

Time: 1/16/14 6:36 AM
Description: Unexpected error

java.lang.NullPointerException
at net.minecraft.block.Block.canConnectRedstone(Block.java:2097)
at net.minecraft.block.BlockRedstoneWire.func_72173_e(BlockRedstoneWire.java:478)
at net.minecraft.client.renderer.RenderBlocks.func_78589_i(RenderBlocks.java:2583)
at net.minecraft.client.renderer.RenderBlocks.func_78612_b(RenderBlocks.java:454)
at net.minecraft.client.renderer.WorldRenderer.func_78907_a(WorldRenderer.java:224)
at net.minecraft.client.renderer.RenderGlobal.func_72716_a(RenderGlobal.java:1574)
at net.minecraft.client.renderer.EntityRenderer.func_78471_a(EntityRenderer.java:1129)
at net.minecraft.client.renderer.EntityRenderer.func_78480_b(EntityRenderer.java:1002)
at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:946)
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:838)
at net.minecraft.client.main.Main.main(SourceFile:101)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:131)
at net.minecraft.launchwrapper.Launch.main(Launch.java:27)

 

[UniZero]

Please post the full log to pastebin then link it here.