*Extra Bit I Found After The First Post*
I found this also happens on version 3.1.3 (the latest version, not the recommended version)
The exact same thing happened.
--- BEGIN ERROR REPORT 7dfb87b2 --------
Generated 07/11/13 18:38
Minecraft: Minecraft 1.2.5
OS: Windows 8 (x86) version 6.2
Java: 1.7.0_17, Oracle Corporation
VM: Java HotSpot Client VM (mixed mode), Oracle Corporation
LWJGL: 2.9.0
OpenGL: IntelĀ® HD Graphics version 3.1.0 - Build 9.17.10.3040, Intel
java.lang.NullPointerException
at cpw.mods.fml.common.modloader.ModLoaderModContainer.init(ModLoaderModContainer.java:356)
at cpw.mods.fml.common.Loader.modInit(Loader.java:273)
at cpw.mods.fml.common.Loader.initializeMods(Loader.java:628)
at cpw.mods.fml.client.FMLClientHandler.onLoadComplete(FMLClientHandler.java:223)
at net.minecraft.client.Minecraft.a(Minecraft.java:429)
at net.minecraft.client.Minecraft.run(Minecraft.java:738)
at java.lang.Thread.run(Unknown Source)
--- END ERROR REPORT ba051d0a ----------