1. Verify that the main report is linked to the same export MDB file as the subreport.
    • Go to Database > Set Location to see the export MDB file for the main report in the File Location box
    • Edit the subreport and go to Database > Set Location to see the export MDB file for the subreport in the File Location box
  2. On the Set Location window, highlight each table in the list to verify that it has the correct MDB file in the File Location box