Like everyone else I am having no success with the IPN Simulator. When I last used it (I think it was in June), it was still working normally. Performing Sandbox transactions delivers information fine through IPN, but logs an error (unless CURLOPT_SSL_VERIFYPEER is set to 0): "cURL error: [60] SSL certificate problem: unable to get local issuer certificate". I have a valid SSL certificate (SHA-2) and php is running with OpenSSL/1.0.1e. My main concern is that next year all live payments will follow the current sandbox model, so this needs to be sorted out before then.
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