I installed some minecraft mods about 2 weeks ago and it has been running fine since then, and it even worked this morning but now i tried to play and after i logged in the screen turned black and a few seconds later it displayed the following:

Mods loaded: 10
ModLoader Beta 1.6.6
mod_InvTweaks 1.05 (1.6.6)
mod_MoreCreepsAndWeirdos MoreCreepsAndWeirdos
mod_HumansPlus 2.1
mod_SdkFlasher 1.6.6v5
mod_SdkFps 1.6.6v5
mod_SdkGrapplingHook 1.6.6v5
mod_SdkGuns 1.6.6v5
mod_SdkUtility 1.6.6v5
mod_TooManyItems 1.6.5 2011-05-28

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

Minecraft has stopped running because it encountered a problem.

If you wish to report this, please copy this entire text and email it to support@mojang.com.
Please include a description of what you did when the error occured.



--- BEGIN ERROR REPORT 6d6e14ab --------
Generated 6/26/11 8:08 PM

Minecraft: Minecraft Beta 1.6.6
OS: Mac OS X (i386) version 10.6.8
Java: 1.6.0_24, Apple Inc.
VM: Java HotSpot(TM) Client VM (mixed mode), Apple Inc.
LWJGL: 2.4.2
OpenGL: ATI Radeon HD 6770M OpenGL Engine version 2.1 ATI-1.6.36, ATI Technologies Inc.

java.nio.BufferOverflowException
at java.nio.DirectByteBuffer.put(DirectByteBuffer.java:340)
at java.nio.ByteBuffer.put(ByteBuffer.java:813)
at jf.a(SourceFile:233)
at jf.b(SourceFile:139)
at net.minecraft.client.Minecraft.x(SourceFile:406)
at net.minecraft.client.Minecraft.a(SourceFile:321)
at p.a(p.java:28)
at net.minecraft.client.Minecraft.run(SourceFile:683)
at java.lang.Thread.run(Thread.java:680)
--- END ERROR REPORT 6368afae ----------

Please help!