same mod two times bug

[DiggyDog24.]

Title: same mod two times bug

Version: 1_0_4

OS: I don't know what this is sorry

Java Version: I don't know what or how to know this

Description of Problem:

Every time I log into Hexxit it will load but when it gets to where I should be able to play it stops and gives me this message.

Error Messages:

Forge Mod Loader has found a problem with your minecraft installation. You have mod sources that are duplicated within your system. ( then it lists tons of different mods)

Error Log:

[DiggyDog24.]

Please help me I love this mod and everyday it starts with a new modpack

[DiggyDog24.]

oh and my Hexxit version isn't 1.0.4. its 1.0.8 but it would only let me put that down.