461061 IPNs failing

IPNs that are sent from Paypal are failing to be received by the server. This has worked before (when only [login to view URL] was being used). However now there are two files ([login to view URL] & [login to view URL]), so may be problem in code (not server). When payment is completed, please implement: [login to view URL] If expiry date = after today's date, then add 365 days to expiry date If expiry date = before today's date, then add 365 days to expiry date from today [login to view URL] Expiry date = 365 days from today Also, please check that confirmation email is being sent when payment is completed (the text for the email is located in [login to view URL]). 1 confirmation email for [login to view URL] A different confirmation email for [login to view URL]