Exception while calling NextTick callback (ArgumentOutOfRangeException: Index was out of range

I'm seeing the following error in my console. Unsure of significance.

08:23 [Error] Exception while calling NextTick callback (ArgumentOutOfRangeException: Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: index)
  at System.ThrowHelper.ThrowArgumentOutOfRangeException (System.ExceptionArgument argument, System.ExceptionResource resource) [0x00029] in <eae584ce26bc40229c1b1aa476bfa589>:0 
  at System.ThrowHelper.ThrowArgumentOutOfRangeException () [0x00000] in <eae584ce26bc40229c1b1aa476bfa589>:0 
  at Oxide.Plugins.WalkingDead+<Spawnnpc>c__AnonStorey3.<>m__0 () [0x003e8] in <2876375810b4419187214b7468c026c5>:0 
  at Oxide.Core.OxideMod.OnFrame (System.Single delta) [0x00051] in <c2afd8354b8b4f3ca451cf5a1aa111c3>:0 

testing a fix for this currently

Changed Status from Pending to Closed

Changed Fixed In to 1.1.3