Thread:MilkMC/@comment-29680750-20170803072238/@comment-30645975-20170803212558

Number one says essentially:

Use the vanilla(default) launcher with McPatcher. It will make a .jar file. Take this .jar file and put it into the mods folder in MultiMC.

Number three is talking about how to get it to work with a 1.5.2 mod, so I can't help you...