FTB Monster Install

FTB Monster Server : Installation Instructions

Download FTB Launcher (exe) : http://www.feed-the-beast.com/

Download this updated mod:

Direct: http://minecraft.curseforge.com/mc-mods/76734-mobiuscore/files/2205274/download
or
1.2.2_1.6.4: http://minecraft.curseforge.com/mc-mods/76734-mobiuscore/files

Launch the Monster (v1.1.1) from FTB / Exit

Click "Edit Mod Pack"

Click "Add Mod"

Locate the "MobiusCore_1.2.2_1.6.4.jar" you downloaded earlier and add it

Disable "MobiusCore_1.1.0" and enable the newer version just downloaded

I recommend disabling "ZansMinimap1.6.4" and enabling "ReiMinimap_v3.4_01" and "JourneyMap3.3.2_Unlimited_MC1.6.4"

Rei's allows way-points and JourneyMap is just a superior mini-map
You'll need to disable Rei's minimap in game, otherwise you'll have two minimaps