You can now customize the way ChestSort will sort your stuff. By default, everything is sorted alphabetically, but items will be put before blocks. See the new config.yml
Bugfix: Players in spectator mode can no longer sort chest
Note: When upgrading, you don't have to include the new config options in your config file, but it is recommended, because otherwise you will not be able to change them. Please just compare your config.yml with the new one.