I have a client with an error in one of their spreadsheets related to some User Defined functions created in VBA. They have the very same UDF working properly in other spreadsheets but when they copy and paste that same function into a particular sheet, they get errors. We have worked through the Trust center settings to ensure macros are enabled. The sheet they are putting this in is an existing engineering sheet that they have developed over the years. Is there a setting somewhere within that sheet that would cause this failure?