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[Prplbeast]

for some reason out of no where on save the server crashes. The report shows this

Server Crash Report
===================

RunUO Version 3.0, Build 4497.24162
Operating System: Microsoft Windows NT 6.1.7601 Service Pack 1
.NET Framework: 2.0.50727.5485
Time: 2/12/2017 11:13:19 PM
Mobiles: 52435
Items: 189678
Exception:
System.NullReferenceException: Object reference not set to an instance of an object.
at Server.Items.CraftingRecipe.Serialize(GenericWriter writer)
at Server.StandardSaveStrategy.SaveItems(SaveMetrics metrics)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()

I have made no changes to anything other then adding in a few things. removed those and it still does it. Help please.