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I was starting the launcher this morning and all of a sudden my comp restarts. When I tried to get back in it gave me this error report.

Minecraft has crashed!
----------------------

Minecraft has stopped running because it encountered a problem.




--- BEGIN ERROR REPORT 1f2e317e --------
Generated 4/9/15 12:15 PM

Minecraft: Minecraft 1.2.5
OS: Windows 8.1 (x86) version 6.3
Java: 1.8.0_40, Oracle Corporation
VM: Java HotSpot(TM) Client VM (mixed mode), Oracle Corporation
LWJGL: 2.9.0
OpenGL: AMD Radeon(TM) R4 Graphics version 4.3.12823 Compatibility Profile Context 13.352.1015.0, ATI Technologies Inc.

java.lang.IllegalArgumentException: Slot 241 is already occupied by [email protected] when adding [email protected]
at pb.<init>(Block.java:251)
at qk.<init>(SourceFile:11)
at qk.<init>(SourceFile:19)
at zc.<init>(SourceFile:19)
at ic2.common.BlockRubSapling.<init>(BlockRubSapling.java:24)
at mod_IC2.load(mod_IC2.java:224)
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 54d2e819 ----------

The launcher has been running really weirdly also, like sometimes it will open randomly