The stand tables sheet can be updated by running the macro MakeStandTables. This will use the settings on the Options sheet to read and process the tree data, linking it to the species list, and summarising results by diameter classes and species groups. If the options, species list, areas table, or tree data are not properly defined, then various kinds of execution error messages may arise at this point (troubleshooting guide).
If persistent problems occur, refer to the Help section.