[Plugin: WordPress Backup to Dropbox] Backup Now – doesn't exclude selected folders

I’ve attempted a backup five times and each time, the plugin backs up folders I’ve excluded in the options. In the Settings, I’ve selected several folders to not be included in the backup. Yet, each time I select “Backup Now”, excluded folders are backed up to Dropbox. I’m using Win 7 with Firefox 9.01.

http://wordpress.org/extend/plugins/wordpress-backup-to-dropbox/