The error says "missing argument"...
so if you have code: $WA_MailObject = WAUE_Definition("mail.simplegiftsnh.com","26","ord ers@simplegiftsnh.com","","");
try using: $WA_MailObject = WAUE_Definition("mail.simplegiftsnh.com","26","ord ers@simplegiftsnh.com","","","");
I'm not sure why there is a missing argument, but adding one might fix the error.