Hopper: java.lang.ClassCastException: -.?g÷¨g÷ cannot be cast to

java.lang.ClassCastException: -.?g÷¨g÷ cannot be cast to 
	at java.awt.image.ComponentColorModel.extractComponent(Unknown Source)
	at java.awt.image.ComponentColorModel.getRGBComponent(Unknown Source)
	at java.awt.image.ComponentColorModel.getRed(Unknown Source)
	at java.awt.image.ComponentColorModel.getRGB(Unknown Source)
	at java.awt.image.BufferedImage.getRGB(Unknown Source)
	at bip.a(SourceFile:111)
	at bip.a(SourceFile:90)
	at bip.a(SourceFile:78)
	at bif.a(SourceFile:45)

---- Minecraft Crash Report ----
// I'm sorry, Dave.

Time: 20.09.13 16:24
Description: Registering texture

java.lang.ClassCastException: nf cannot be cast to [B
	at java.awt.image.ComponentColorModel.extractComponent(Unknown Source)
	at java.awt.image.ComponentColorModel.getRGBComponent(Unknown Source)
	at java.awt.image.ComponentColorModel.getRed(Unknown Source)
	at java.awt.image.ComponentColorModel.getRGB(Unknown Source)
	at java.awt.image.BufferedImage.getRGB(Unknown Source)
	at bip.a(SourceFile:111)
	at bip.a(SourceFile:90)
	at bip.a(SourceFile:78)
	at bif.a(SourceFile:45)
	at bim.a(SourceFile:69)
	at bim.a(SourceFile:37)
	at blt.b(SourceFile:357)
	at blt.c(SourceFile:412)
	at blt.a(SourceFile:446)
	at bfe.b(SourceFile:718)
	at atv.S(SourceFile:686)
	at atv.d(SourceFile:619)
	at net.minecraft.client.main.Main.main(SourceFile:101)


A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- Head --
Stacktrace:
	at java.awt.image.ComponentColorModel.extractComponent(Unknown Source)
	at java.awt.image.ComponentColorModel.getRGBComponent(Unknown Source)
	at java.awt.image.ComponentColorModel.getRed(Unknown Source)
	at java.awt.image.ComponentColorModel.getRGB(Unknown Source)
	at java.awt.image.BufferedImage.getRGB(Unknown Source)
	at bip.a(SourceFile:111)
	at bip.a(SourceFile:90)
	at bip.a(SourceFile:78)
	at bif.a(SourceFile:45)

-- Resource location being registered --
Details:
	Resource location: minecraft:textures/gui/title/background/panorama_0.png
	Texture object class: bif
Stacktrace:
	at bim.a(SourceFile:69)
	at bim.a(SourceFile:37)
	at blt.b(SourceFile:357)
	at blt.c(SourceFile:412)
	at blt.a(SourceFile:446)

-- Screen render details --
Details:
	Screen name: blt
	Mouse location: Scaled: (247, 234). Absolute: (494, 11)
	Screen size: Scaled: (427, 240). Absolute: (854, 480). Scale factor of 2
Stacktrace:
	at bfe.b(SourceFile:718)
	at atv.S(SourceFile:686)
	at atv.d(SourceFile:619)
	at net.minecraft.client.main.Main.main(SourceFile:101)

-- System Details --
Details:
	Minecraft Version: 1.6.4
	Operating System: Windows 7 (x86) version 6.1
	Java Version: 1.7.0_25, Oracle Corporation
	Java VM Version: Java HotSpot(TM) Client VM (mixed mode, sharing), Oracle Corporation
	Memory: 19626736 bytes (18 MB) / 69541888 bytes (66 MB) up to 518979584 bytes (494 MB)
	JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx512M
	AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
	Suspicious classes: No suspicious classes found.
	IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
	Launched Version: 1.6.4
	LWJGL: 2.9.0
	OpenGL: GeForce GT 630/PCIe/SSE2 GL version 4.2.0, NVIDIA Corporation
	Is Modded: Probably not. Jar signature remains and client brand is untouched.
	Type: Client (map_client.txt)
	Resource Pack: Default
	Current Language: Norsk (NO)
	Profiler Position: N/A (disabled)
	Vec3 Pool Size: ~~ERROR~~ NullPointerException: null