Paypal IPN not working on CreLoaded server-EXPERT ONLY PLEASE-

This will be the 3rd Project opened for the same problem. Please only bid if you know how to fix this. ------------ Colo Wamp Server running CRE Loaded v 6.2[10.1] Standard I have been running the default Paypal checkout with Cre with Paypal for 8 months. I'm not sure what has been done with the other projects to get it working. The previous problem fixed was my [login to view URL] was redirecting to the homepage but IPN's still weren't working so he gave up. When testing [login to view URL] I'm not getting a response from the server. IPN quit working about a month ago. I've talked to paypal and everything on their side is fine, just Cre needs to be fixed. I would be very happy if someone could rebuild the paypal checkout or fix it. I will explain full details of what's been done so far if you need. If your an expert this shouldn't be too tough. Project is considered complete when live store IPN payments function. This store is running LIVE right now and I need minimal downtime if possible. Thanks.