id summary reporter owner description type status priority milestone component version severity resolution keywords cc focuses 19342 Call to undefined function convert_to_screen when using plugins with custom meta boxes jackdewey rboren "In WP 3.3 Beta 3, activating a plugin that registers custom meta boxes makes the web site go to a blank screen with the error: Fatal error: Call to undefined function convert_to_screen() in C:\Home\Projects\htdocs\wp-admin\includes\template.php on line 854 Looking at this line, it is trying to call the function convert_to_screen to convert the name of the screen that meta box should be displayed on, since it is passed as one of the function arguments. In this specific case, it happened upon trying to activate the Link Library plugin (http://wordpress.org/extend/plugins/link-library/)" defect (bug) closed normal 3.3 Template 3.3 major fixed has-patch commit