could be a conflict with truepve as i do have sleeper protection on

01:07 [Error] Failed to call hook 'OnEntityTakeDamage' on plugin 'SleeperAnimalProtection v1.0.2' (NullReferenceException: Object reference not set to an instance of an object)
  at Oxide.Plugins.SleeperAnimalProtection.OnEntityTakeDamage (BaseCombatEntity entity, HitInfo info) [0x000a3] in <02f4282dfade4ff39553ff2342f8deb0>:0 
  at Oxide.Plugins.SleeperAnimalProtection.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x00132] in <02f4282dfade4ff39553ff2342f8deb0>:0 
  at Oxide.Plugins.CSharpPlugin.InvokeMethod (Oxide.Core.Plugins.HookMethod method, System.Object[] args) [0x00079] in <31122a27a2414cd799150f8677cf39d4>:0 
  at Oxide.Core.Plugins.CSPlugin.OnCallHook (System.String name, System.Object[] args) [0x000d8] in <c2afd8354b8b4f3ca451cf5a1aa111c3>:0 
  at Oxide.Core.Plugins.Plugin.CallHook (System.String hook, System.Object[] args) [0x00060] in <c2afd8354b8b4f3ca451cf5a1aa111c3>:0 

I have like 10 exceptions per second when installing this plugin :\

ok I wanted to make sure I am not the only one that had to pull this plug in recently from my server and I have been using it for a extreamly long time with true PVE just the past 2 wipes I had to pull it. 

Wonder if anyone has a working version out right now?

had to pull it also even after wulf had a go fixing it.. shame

found the cause of the error message. please try the latest version