you are going to want to first get the Mayberry 1.5.1 Patch. https://mega.co.nz/#!X05zBKLL!STWaWi-rdsKfIirof5s0-WsGH2dnTyLcxfFroJIH4uY once you have done that you will want to take the patch and place it in your Mayberry Mod 1.5 folder. now that you have done both of those things you are good to go and can play MP with out any issue.