Options button crash

When i click the options button in-game, minecraft crashes and gives me this crsh report:

---- Minecraft Crash Report ----
// Quite honestly, I wouldn't worry myself about that.

Time: 10/25/12 8:15 AM
Description: Unexpected error

java.lang.VerifyError: (class: aso, method: a signature: (Larl;)V) Incompatible argument to function
	at asq.a(SourceFile:39)
	at asw.a(SourceFile:64)
	at asw.d(SourceFile:112)
	at asw.m(SourceFile:100)
	at net.minecraft.client.Minecraft.l(SourceFile:1077)
	at net.minecraft.client.Minecraft.J(SourceFile:582)
	at net.minecraft.client.Minecraft.run(SourceFile:534)
	at java.lang.Thread.run(Unknown Source)

Relevant Details:
- Minecraft Version: 1.4.2
- Operating System: Windows 7 (amd64) version 6.1
- Java Version: 1.6.0_22, Sun Microsystems Inc.
- Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Sun Microsystems Inc.
- Memory: 209383880 bytes (199 MB) / 589496320 bytes (562 MB) up to 954466304 bytes (910 MB)
- JVM Flags: 2 total; -Xms512m -Xmx1024m
- AABB Pool Size: 289 (16184 bytes; 0 MB) allocated, 2 (112 bytes; 0 MB) used
- LWJGL: 2.4.2
- OpenGL: Intel(R) HD Graphics GL version 2.1.0 - Build 8.15.10.2622, Intel
- Is Modded: Very likely
- Type: Client
- Texture Pack: Default
- Profiler Position: N/A (disabled)
- Vec3 Pool Size: 53 (2968 bytes; 0 MB) allocated, 11 (616 bytes; 0 MB) used
- World MpServer Entities: 1 total; [axc['ninja20006157'/10764, l='MpServer', x=1004.12, y=57.62, z=-509.68]]
- World MpServer Players: 1 total; [axc['ninja20006157'/10764, l='MpServer', x=1004.12, y=57.62, z=-509.68]]
- World MpServer Chunk Stats: MultiplayerChunkCache: 441
- Forced Entities: 1 total; [axc['ninja20006157'/10764, l='MpServer', x=1004.12, y=57.62, z=-509.68]]
- Retry Entities: 0 total; []