What's wrong with this gmail script contacts importer for Drupal?

Drupal has a gmail contacts importer module which has been about the same since about 7 months. I have no cuts to debug the problem, the maintainer has disappeared and I think this is an important part of the job. So I turn to StackOverflow for help.

Problem. When you fill in your credentials and tell the script to get your contacts back, it pulls at 25 by default. This works fine.

When you are told to search for more contacts by changing the url that you request from this:

http://www.google.com/m8/feeds/contacts/default/thin  

      

        
        
        
      

    

:

http://www.google.com/m8/feeds/contacts/default/thin?max-results=1000

      

        
        
        
      

    

You get the following fatal error:

Fatal error: Calling member function getAttribute()

for non-object at path/to/site/sites/all/modules/dcl_importer/scripts/importGData.class.php

on line 97

Here's the script:

class GDataMailer {
    static $url_ClientLogin = 'https://www.google.com/accounts/ClientLogin';
    static $url_Feed = 'http://www.google.com/m8/feeds/contacts/default/thin?max-results=65535';

    function newCurlSession($URL, $auth = null) {
        $curl = curl_init();

        $opts = array(
            CURLOPT_URL => $URL,
            CURLOPT_REFERER => '',
            CURLOPT_SSL_VERIFYPEER => false,
            CURLOPT_SSL_VERIFYHOST => true,
            CURLOPT_RETURNTRANSFER => true,
            CURLOPT_FOLLOWLOCATION => true,
        );
        if (null != $auth) {
            $opts[CURLOPT_HTTPHEADER] = array(
               'Authorization: GoogleLogin auth='.$auth,
            );
        }
        curl_setopt_array($curl, $opts);
        return $curl;
    }

    function useCurlForPost($curl, $params) {
        curl_setopt($curl, CURLOPT_POST, true);
        curl_setopt($curl, CURLOPT_POSTFIELDS, $params);
        return $curl;
    }

    function getAuthToken($login, $password) {
        $curl = $this->useCurlForPost($this->newCurlSession(self::$url_ClientLogin), array(
           'accountType' => 'HOSTED_OR_GOOGLE',
           'Email' => $login,
           'Passwd' => $password,
           'service' => 'cp',
           'source' => 'Drupal-Contact-Importer',
        ));
        $resp = curl_exec($curl);

        // Look for the important stuff:
        preg_match_all('/Auth=([^\s]*)/si', $resp, $matches);
        if (isset($matches[1][0])) {
            return $matches[1][0];
        } else {
           return false;
        }
    }

    function getAddressbook($login, $password) {
        // check if username and password was given:
        if ((isset($login) && trim($login)=="") || (isset($password) && trim($password)==""))
        {
            $args = func_get_args();
            drupal_set_message('Incorrect login information given: '.print_r($args, true), 'error');
            return false;
        }

        // Get the GData auth token:
        $auth = $this->getAuthToken($login, $password);
        if (false === $auth) {
            drupal_set_message('Login failed', 'error');
            return false;
        }        

        $curl = $this->newCurlSession(self::$url_Feed, $auth);
        $data = curl_exec($curl);

        $doc = new DOMDocument();
        $doc->loadXML($data);
        $path = new DOMXPath($doc);
        $path->registerNamespace('a', 'http://www.w3.org/2005/Atom');
        $path->registerNamespace('gd', 'http://schemas.google.com/g/2005');
        $nodes = $path->query('//a:entry');
        $num = $nodes->length;

        $contacts = array();
        for ($x = 0; $x < $num; $x++) {
            $entry = $nodes->item($x);
            $tnodes = $path->query('a:title', $entry);
            $nnode = $tnodes->item(0);
            $name = $nnode->textContent;
            $enodes = $path->query('gd:email', $entry);
            $mnode = $enodes->item(0);
            $email = $mnode->getAttribute('address');
            // NOTE: Keep in mind that $mnode->getAttribute('rel') tells you what kind of email it is.
            // NOTE: Also remember that there can be multiple emails per entry!
            if (empty($name)) {
                $contacts[] = $email;
            } else {
                $contacts[$name] = $email;
            }
        }        

        return $contacts;
    }
}

      

        
        
        
      

    

Line 97 is the line $email = $mnode->getAttribute('address');

near the end.

What can I change here so that I don't get this error again and make this work for the Drupal community? I want the entire contact list to be more than just 25. I figure if I sent a number high enough it would be close enough to get through.