I installed a Birthday notification add-on (XenFacil Birthday Greetings, big mistake) and after uninstalling it I'm left with files I cannot delete. Normally I wouldn't care but I am receiving over 600 alerts daily on my server as shown below. The add-on has already been removed along with the cron job. When I try to delete the files left in the library directory the deletion fails. I've tried changing the permissions but this reverts back to the original permissions upon refresh. I tried this through both cpanel and ftp. One file in particular, Birthdays.php is a cron file that will not allow the permissions to be changed from 644. I receive approximately 600 of these alerts per day. Anyone have an idea on how to end this misery?!