Index: template.php
===================================================================
--- template.php	(revision 21546)
+++ template.php	(working copy)
@@ -1116,7 +1116,10 @@
 	foreach ( (array) $wp_settings_sections[$page] as $section ) {
 		if ( $section['title'] )
 			echo "<h3>{$section['title']}</h3>\n";
-		call_user_func($section['callback'], $section);
+		
+		if ( $section['callback'] )
+			call_user_func($section['callback'], $section);
+		
 		if ( !isset($wp_settings_fields) || !isset($wp_settings_fields[$page]) || !isset($wp_settings_fields[$page][$section['id']]) )
 			continue;
 		echo '<table class="form-table">';