You can search your code for Server.CreateObject( it is in the include file associated with your payment named after PFPro. You would update the Server.CreateObject reference with the code provided by Paypal in their documentation on how to update this problem. Unfortunately we have moved away from the ASP and PHP server models and cannot continue to make code updates on those platforms in perpetuity.
I'm happy to talk you through it, but you are going to have to update the code and understand what you are doing to get it done. That means reading what paypal says you have to update and doing it in the associated spot in the code.
Maybe I am missing something but there were no links in the statement above?
I have coded ASP for 8 years and I am sure I can make the required changes but it doesn't mean I am happy with WebAssist deciding to drop all support for ASP customers using eCart.
Please can you point me in the right direction to get the updates completed.