InfoPath Dev

  sorry - this is the error I get ...  WarningAn error occurred querying a data source.Click OK to resume filling out the form. You may want to check your form data for errors.Hide error detailsXML data that is required for this form to function correctly cannot be found. An entry has been added to the Windows event log of the ...

Relative newbie here, would appreciate if someone could either help me with the issue or suggest a better approach to my problem??  This is what I am trying to achieve and the issue …  I have a document library that contains Reports.  I have created a list called “Definitions”, this contains definitions of terms ...