Forge has found a problem with your minecraft installation

[WynterAsiuuki]

Hey, recently I have been playing on mods with no problem at all.

 

Then I transferred some mods from the CrazyCraft modpack for 1.7.

 

When I try to load the CrazyCraft,it takes forever and never loads, so i thought I could pick out my favorite mods and use those. That's what I did, and put those mods into my .minecraft mods folder.

 

After taking 10 minutes to load, this message pops up:

 

Forge Mod Loader has found a problem with your Minecraft installation

 

iChunUtil:  Minimum version required is 4.0.0

 

The file 'logs/fml-client-latest.log' contains more information

 

I have no clue what is going on. I have Forge 1.7.10. The mods are 1.7.10 I have no clue why this is showing up!

 

[WynterAsiuuki]

But what is iChunUtil? Is it like Forge? And where would be a safe website for me to download it?