curl error unable to set private key file: 'certificate.pem' type PEM

[tibberous]

I am trying to use the linkpoint API. It uses SSL through curl - both of which I have turned on.

 

curl_setopt ($ch, CURLOPT_SSLCERT, 'certificate.pem');

$result = curl_exec ($ch);

 

Returns false, and curl_error say:

 

curl error unable to set private key file: 'certificate.pem' type PEM

 

To make my PEM file, I went to my website, clicked the cert, and exported it as a PEM. I tried with and without a chain, made sure to set the encoding to ASCII and the line terminator to LF.

 

Anyone have any idea's what to do?