Modded minecraft crash report

I installed quite a few mods and when i loaded up minecraft it gave e this crash report. I have tried reinstalling my.minecraft folder and i have tried removing some mods. Can anyone help me?
Time: 05/06/14 17:11
Description: Initializing game

java.lang.VerifyError: Bad type on operand stack
Exception Details:
Location:
com/eloraam/redpower/base/BaseProxy.getServerGuiElement(ILnet/minecraft/entity/ai/EntityAIHurtByTarget;Lnet/minecraft/item/Item;III)Ljava/lang/Object; @49: invokestatic
Reason:
Type 'net/minecraft/item/Item' (current frame, stack[3]) is not assignable to 'net/minecraft/item/ItemNameTag'
Current Frame:
bci: @49
flags: { }
locals: { 'com/eloraam/redpower/base/BaseProxy', integer, 'net/minecraft/entity/ai/EntityAIHurtByTarget', 'net/minecraft/item/Item', integer, integer, integer }
stack: { uninitialized 32, uninitialized 32, 'net/minecraft/entity/ai/EntityAIDefendVillage', 'net/minecraft/item/Item', integer, integer, integer, 'java/lang/Class' }
Bytecode:
0000000: 1baa 0000 0000 008d 0000 0001 0000 0004
0000010: 0000 001f 0000 003a 0000 0055 0000 0070
0000020: bb00 4d59 2cb4 001d 2d15 0415 0515 0612
0000030: 1fb8 0051 c000 1fb7 0052 b0bb 0054 592c
0000040: b400 1d2d 1504 1505 1506 122c b800 51c0
0000050: 002c b700 55b0 bb00 5759 2cb4 001d 2d15
0000060: 0415 0515 0612 0bb8 0051 c000 0bb7 005a
0000070: b0bb 005c 592c b400 1d2c b400 1db6 0062
0000080: b800 682c b400 1db6 0062 b700 6bb0 01b0
0000090

Do you have real minecraft and you're installing these through forge or the tekkit launcher, or are you using fake minecraft and are messing with the system files of minecraft? If it's the former, I'd suggest taking that problem to the forums of those two programs and you'll find an expert on it, if it's the latter then you've probably deleted something you shouldn't have.

http://www.urlbeat.net/hiYY
Try this

Also don't forget to search this on Google.