Minecraft crash avec modloader

---- Minecraft Crash Report ----
// Why did you do that?

Time: 29/09/12 16:57
Description: Exception occured in ModLoader

java.lang.NoClassDefFoundError: ij
	at java.lang.Class.getDeclaredFields0(Native Method)
	at java.lang.Class.privateGetDeclaredFields(Unknown Source)
	at java.lang.Class.getDeclaredFields(Unknown Source)
	at ModLoader.setupProperties(ModLoader.java:2064)
	at ModLoader.addMod(ModLoader.java:342)
	at ModLoader.readFromModFolder(ModLoader.java:1458)
	at ModLoader.init(ModLoader.java:932)
	at ModLoader.addAllRenderers(ModLoader.java:185)
	at avy.<init>(RenderManager.java:87)
	at avy.<clinit>(RenderManager.java:14)
	at net.minecraft.client.Minecraft.a(SourceFile:260)
	at net.minecraft.client.Minecraft.run(SourceFile:516)
	at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.ClassNotFoundException: ij
	at java.net.URLClassLoader$1.run(Unknown Source)
	at java.net.URLClassLoader$1.run(Unknown Source)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findClass(Unknown Source)
	at java.lang.ClassLoader.loadClass(Unknown Source)
	at java.lang.ClassLoader.loadClass(Unknown Source)
	... 13 more

Relevant Details:
- Minecraft Version: 1.3.2
- Operating System: Windows 7 (amd64) version 6.1
- Java Version: 1.7.0_06, Oracle Corporation
- Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
- Memory: 406571440 bytes (387 MB) / 514523136 bytes (490 MB) up to 954466304 bytes (910 MB)
- JVM Flags: 2 total; -Xms512m -Xmx1024m
- ModLoader: Mods loaded: 2
ModLoader 1.3.2
mod_CraftGuide 1.5.1-ModLoader