I'm receiving the following messages when I access a JoomDoc page in my Joomla web site:


Warning: array_map() [function.array-map]: The first argument, 'JFilterOutput::stringURLSafe', should be either NULL or a valid callback in /home/tssob/thesecondsetofbooks.info/cms/administrator/components/com_joomdoc/libraries/joomdoc/utilities/string.php on line 93

Warning: implode() [function.implode]: Invalid arguments passed in /home/tssob/thesecondsetofbooks.info/cms/administrator/components/com_joomdoc/libraries/joomdoc/utilities/string.php on line 94

Who would I approach with these messages, to get a fix/resolution?

Thanks.