Opens the global database PLANTS.DAT and, if specified, the additional local database for plants.
If PLANTS.DAT is missing or the specification in the main section of the Main The Configuration File .CF - Overview is left empty, plants will be skipped.
The maximum amount of plants is 150 in total (Global+Local Database).
Make sure that it exists and that it is readable.
The Local Database is only read if the Global Plant Database was opened successfully.
Plants IDs must contain a letter, numbers are not valid as they might be confused with building heights.
The database format have been changed over the version. Make sure that the file has a valid version ID (see description of PLANTS.DAT).