Hi, I am running: Mod: Spigot 1.8.7 SNAPSHOT b3c0272-7723b90 (06/06/2015). This has been an ongoing problem for a long time, and I have finally isolated down the issue to one plugin, MassiveCore, the plugin that Factions needs to run. When MassiveCore is running, hostile mobs simply do not spawn anywhere, when its not, they spawn as normal. I am not sure why this could be happening as there is nothing in the config to cause this. These are the versions of the plugins I am running: https://www.spigotmc.org/resources/massivecore.1901/ | All I did was download this, unzip it and copy the jar files of "Factions" and "MassiveCore" to the plugins library, so I am pretty sure I am running the correct versions of each. Anyone have any suggestions?