Index: trunk/core/units/categories/categories_config.php
===================================================================
diff -u -r4524 -r4582
--- trunk/core/units/categories/categories_config.php	(.../categories_config.php)	(revision 4524)
+++ trunk/core/units/categories/categories_config.php	(.../categories_config.php)	(revision 4582)
@@ -171,7 +171,7 @@
 									            'EditorsPick' => Array('type' => 'int','default' => ''),
 									            'Status' => Array('type' => 'int','not_null' => '1','default' => '0'),
 									            'Pop' => Array('type' => 'int','default' => ''),
-									            'Priority' => Array('type' => 'int','default' => ''),
+									            'Priority' => Array('type' => 'int', 'not_null' => 1, 'default' => ''),
 									            'MetaKeywords' => Array('type' => 'string','default' => ''),
 									            'CachedDescendantCatsQty' => Array('type' => 'int','default' => ''),
 									            'CachedNavbar' => Array('type' => 'string','not_null' => '1','default' => ''),