i open multimc like normale, edit industrialcraft 2 in to the folder with compact solar then started play n it sayed forge mod loader has found a problem with your minecraft installation the mods and versions listed below could not be found ic2 :[1.106,) the file 'forgemodloader-client-0.log' contains more info
Joke beside. As far as i know multimc does work with IC². You should explain us all exactly, what you did to use it with multimc, so that we can find your error.