Failed to run a 1800.00 timer in 'GuardedCrate v1.5.3' (NullReferenceException: Object reference not set to an instance of an object)
  at Oxide.Plugins.GuardedCrate+PluginData+c__AnonStorey0.<>m__0 (Oxide.Plugins.GuardedCrate+EventSetting x) [0x00000] in :0 
  at System.Linq.Enumerable.TryGetFirst[TSource] (System.Collections.Generic.IEnumerable`1[T] source, System.Func`2[T,TResult] predicate, System.Boolean& found) [0x0003f] in :0 
  at System.Linq.Enumerable.FirstOrDefault[TSource] (System.Collections.Generic.IEnumerable`1[T] source, System.Func`2[T,TResult] predicate) [0x00000] in :0 
  at Oxide.Plugins.GuardedCrate+PluginData.FindEvent (System.String name) [0x0000d] in :0 
  at Oxide.Plugins.GuardedCrate.StartEvent (System.String name) [0x00000] in :0 
  at Oxide.Plugins.GuardedCrate.m__2 () [0x00000] in :0 
  at Oxide.Core.Libraries.Timer+TimerInstance.FireCallback () [0x00018] in :0 

will take a look into this for you.