Xmlrpc error

Message:The XML data received was either invalid or not in the correct form for XML-RPC. Turn on debugging to examine the XML data further.


Controller : $this->xmlrpc->set_debug(TRUE);

<p>Severity: Runtime Notice</p>
<p>Message: Resource ID#32 used as offset, casting to integer (32)</p>
<p>Filename: libraries/Xmlrpcs.php</p>
<p>Line Number: 237</p>