Hi Ron -

The REA_Zone ID r4 reference is for a custom zone stamp library part that we supply with MasterTemplate. It is included as an embedded library part in the hotlinked Interactive Legend files. If by any chance you have unloaded or deleted these Legends, you will get this warning message.

Please check the File menu > External Content > Hotlinked Modules and see if the Interactive Legends and Favorites files are still linked (there are three of them). If not, then I suggest you either link them in again, or go back to the starting point (do not collect $200 ;-) and reopen the downloaded MasterTemplate TPL file and this time don't delete the Legends from the project.

Alternatively, if you have intentionally deleted the Legend files, you may clean up this warning message by either changing the settings in the Options menu > Zone Categories to use a different zone stamp (do this for each and every zone category); or by loading the REA_Zone ID r4 object (using the File menu > Libraries and Objects > Library Manager > ADD button) from the MasterTemplate Supplemental Files folder > AMT15 USA LIBRARY folder.

Please let me know if you need further guidance on this.

Eric Bobrow

P.S. Thanks for posting your question in the Support Forum!