ModPack Crash Error help

[luwie556]

Hello My modpack keeps crashing and someone told my why and the paste bin is here

http://pastebin.com/bBcETKcb and i need to know What the error means and how to fix it

Error: Caused by: java.lang.NoClassDefFoundError: CoroAI/util/CoroUtilFile

[plowmanplow]

Looks like you didn't install Tropicraft correctly. Download the mod's installation file from the author's website and follow his instructions.

[luwie556]

Thanks plow I will do it when I can