15:04 [Error] Failed to call hook 'Unload' on plugin 'BoobyTraps v0.2.17' (NullReferenceException: Object reference not set to an instance of an object)
  at Oxide.Plugins.BoobyTraps.SaveData () [0x0006d] in <886b5af3beee4d4794dfca8300ddeae9>:0 
  at Oxide.Plugins.BoobyTraps.Unload () [0x00096] in <886b5af3beee4d4794dfca8300ddeae9>:0 
  at Oxide.Plugins.BoobyTraps.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x003a5] in <886b5af3beee4d4794dfca8300ddeae9>:0 
  at Oxide.Plugins.CSharpPlugin.InvokeMethod (Oxide.Core.Plugins.HookMethod method, System.Object[] args) [0x00079] in <60c318df79ed41688ea59335e48d61ad>:0 
  at Oxide.Core.Plugins.CSPlugin.OnCallHook (System.String name, System.Object[] args) [0x000d8] in <9882f28dc2204b4dba514a9ad18f5042>:0 
  at Oxide.Core.Plugins.Plugin.CallHook (System.String hook, System.Object[] args) [0x00060] in <9882f28dc2204b4dba514a9ad18f5042>:0 

Have you checked to see if your data for the plugin is corrupt? I saw you report a similar issue with multiple plugins.

The data file looks fine. I was thinking it was related to the patch since I had so many plugins with errors on the unload hook so I was giving authors a heads up.