Still happening well it is now 

[8/11/2019 2:14:02 AM] Failed to call hook 'OnPlayerActiveItemChanged' on plugin 'TriggeredExplosiveCharges v1.0.19' (NullReferenceException: Object reference not set to an instance of an object)
  at Oxide.Plugins.TriggeredExplosiveCharges+TriggeredExplosivesManager..ctor (BasePlayer player) [0x00036] in <0b3f84e6093945248824b2e4ec5a1822>:0 
  at Oxide.Plugins.TriggeredExplosiveCharges.OnPlayerInit (BasePlayer player) [0x00015] in <0b3f84e6093945248824b2e4ec5a1822>:0 
  at Oxide.Plugins.TriggeredExplosiveCharges.OnPlayerActiveItemChanged (BasePlayer player, Item oldItem, Item newItem) [0x00000] in <0b3f84e6093945248824b2e4ec5a1822>:0 
  at Oxide.Plugins.TriggeredExplosiveCharges.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x005dd] in <0b3f84e6093945248824b2e4ec5a1822>:0 
  at Oxide.Plugins.CSharpPlugin.InvokeMethod (Oxide.Core.Plugins.HookMethod method, System.Object[] args) [0x00079] in <9affce1cd15c4ec183941adef8db1722>:0 
  at Oxide.Core.Plugins.CSPlugin.OnCallHook (System.String name, System.Object[] args) [0x000d8] in <4452f821def6406d834e4149849fe7ea>:0 
  at Oxide.Core.Plugins.Plugin.CallHook (System.String hook, System.Object[] args) [0x00060] in <4452f821def6406d834e4149849fe7ea>:0 ​

Thanks, I'll look into it!

No problem it literaly spammed red code in the console about 50 times.

Couldn't reproduce the error, but I think I have a notion of what might happend, and where the error occured. I've uploaded a new version, that should fix it.