Index: trunk/core/kernel/db/db_tag_processor.php
===================================================================
diff -u -r8067 -r8097
--- trunk/core/kernel/db/db_tag_processor.php	(.../db_tag_processor.php)	(revision 8067)
+++ trunk/core/kernel/db/db_tag_processor.php	(.../db_tag_processor.php)	(revision 8097)
@@ -155,7 +155,7 @@
 				$block_params['filter_width'] = $options['filter_width'];
 			}
 			elseif (isset($options['width'])) {
-				if (preg_match('/range/', $options['filter_block'])) {
+				if (isset($options['filter_block']) && preg_match('/range/', $options['filter_block'])) {
 					if ($options['width'] < 60) {
 						$options['width'] = 60;
 						$block_params['filter_width'] = 20;