Home › Forums › Plugin Support › WP User Frontend Pro › Paypal IPN test This topic is: not resolved This topic contains 1 reply, has 1 voice, and was last updated by Rob 4 years, 7 months ago. Viewing 2 posts - 1 through 2 (of 2 total) Author Posts September 25, 2014 at 11:00 am #27485 RobMember Post count: 101 Hi I am unable to successfuly test the IPN responder: I am in sandbox mode, and using the Paypal IPN simulator (https://developer.paypal.com/webapps/developer/applications/ipn_simulator) I have set the IPN handler URL to http://problemshare.net/wp-content/plugins/wp-user-frontend-pro/lib/gateway/paypal.php, but I get 500: Internal Server Error. The permissions on the file is 755 What am I doing wrong? Thx ROB October 2, 2014 at 11:16 am #27879 RobMember Post count: 101 Bump? Author Posts Viewing 2 posts - 1 through 2 (of 2 total) The topic ‘Paypal IPN test’ is closed to new replies.