If you want to generate a new spell list, do the following steps:

1. Go to http://www.pathfindercommunity.net/home/databases/spells
2. Download the csv.
3. Save the resulting file as "spells.csv" in the same directory as the program.
4. Delete or rename "spells.xml".
5. Run the program, it will regenerate the xml file from the csv file.
6. You can now safely remove the csv file.

As long as d20pfsrd doesn't significantly change the format it should remain
compatible.