Hi David,
The reason why you're getting that warning is because of the design of the report.
I believe this is a standard crystal layout which has tables and stored procedure linked.
As I have said this is just a warning message saying that there is more than one datasource or "stored procedure" is used in this report
If you really want to get rid of this warning you might need to create a layout using command object but you'll need your SQL scripting skills with this approach
or have a play with other links other than just the table you added. Links on crystal reports is just SQL joins but with a GUI
Regards
JP