Multiple fatal errors in Pro version

Using the FB Comments Importer Pro – getting two different fatal errors on a Multisite install.

[Tue Jun 24 15:15:17 2014] [error] [client xxx.xxx.xxx.xxx] PHP Fatal error: Call to undefined function gethttps_data() in /nas/wp/www/cluster-xxxx/xxxxxx/wp-content/plugins/fb-comments-importer-pro/includes/SocialPublisher.class.inc on line 210

[Tue Jun 24 14:45:22 2014] [error] [client xxx.xxx.xxx.xxx] PHP Warning: file_get_contents(http://graph.facebook.com/xxxxxx) [function.file-get-contents]: failed to open stream: HTTP request failed! HTTP/1.1 400 Bad Request\r\n in /nas/wp/www/cluster-xxxx/xxxxxx/wp-content/plugins/fb-comments-importer-pro/includes/FBComments.class.inc on line 396

Any clue to where I should start troubleshooting? I’ve renewed the token and checked the App ID/Secret and other settings are correct.

https://ww.wp.xz.cn/plugins/fb-comments-importer/