Crash on startup 1.7.10

  • Hi, I seem to be having an issue on startup with the IC2 mod, it crashes with an error related to the Irecipeinput file, heres the error code:

    Code
    1. Error: cpw.mods.fml.common.LoaderException: java.lang.NoClassDefFoundError: ic2/api/recipe/IRecipeInput

    The crash report is attatched, I'm not a coding guy so I have no idea where to go, and any help is greatly appreciated, thanks!