I have installed List Mail Pro auto responder script and all functions work fine but one: it doesn't send sequential followup messages. All the rest, signup forms, confirmation email messages(for double optin), redirections, notification of new signups, everything is working perfectly. I thought there could be something wrong with the way I've set up the cron jobs but Hostgator support assured they were correct. Why isn't it working then? Can anyone give me some ideas on how to fix it?