Report to Find Items w/ Null Relationship

Good day all.  I am having a hard time trying to create a report to find Documents without files attached.  This is the current config.

Aras v11 SP10

s_Document - Poly Source for the following ItemTypes.

s_Delivered Document

s_Drawing

s_Parts List

s_Manual

s_Specification

s_RefLibrary

All of there ItemTypes have RelationshipTypes with File.  How do I create a report to return all of the Documents that do not have a file attached?  I tried to use a variation of the Query for an item and return its configuration example from the Programmers guide.  I changed all of the information from Part & BOM to s_Drawing and File.  When I Run Server Method, it produces an error of Not a single item.  Thank you for the help with this.