Solved [Error] Exception while calling NextTick callback

First time I have seen this error. Anybody can enlighten me?

Code:

[Error] Exception while calling NextTick callback (NullReferenceException: Object reference not set to an instance of an object)
[Oxide] 18:34 [Debug]  at Oxide.Plugins.Quests+<OnEntityTakeDamage>c__AnonStorey0.<>m__0 () [0x00000] in <filename unknown>:0
  at Oxide.Core.OxideMod.OnFrame (Single delta) [0x00000] in <filename unknown>:0

Related to Quest plugin perhaps? Sorry Wulf, just noticed that I will post in Support thread.. lol

Edit Silly me, my Quest plugin was outdated