Index: trunk/core/units/categories/categories_config.php
===================================================================
diff -u -N -r8586 -r8879
--- trunk/core/units/categories/categories_config.php	(.../categories_config.php)	(revision 8586)
+++ trunk/core/units/categories/categories_config.php	(.../categories_config.php)	(revision 8879)
@@ -248,7 +248,7 @@
 									            'MetaKeywords'				=>	Array('type' => 'string', 'default' => null),
 									            'CachedDescendantCatsQty'	=>	Array('type' => 'int', 'default' => 0),
 									            'CachedNavbar'				=>	Array('type' => 'string', 'formatter' => 'kMultiLanguage', 'default' => null),
-									            'CreatedById'				=>	Array('type' => 'int', 'formatter' => 'kLEFTFormatter', 'options' => Array(-1 => 'root', -2 => 'Guest'),'left_sql'=>'SELECT %s FROM '.TABLE_PREFIX.'PortalUser WHERE `%s` = \'%s\'', 'left_key_field' => 'PortalUserId', 'left_title_field' => 'Login', 'not_null' => 1,'default' => 0),
+									            'CreatedById'				=>	Array('type' => 'int', 'formatter' => 'kLEFTFormatter', 'error_msgs' => Array ('invalid_option' => '!la_error_UserNotFound!'), 'options' => Array(-1 => 'root', -2 => 'Guest'),'left_sql'=>'SELECT %s FROM '.TABLE_PREFIX.'PortalUser WHERE `%s` = \'%s\'', 'left_key_field' => 'PortalUserId', 'left_title_field' => 'Login', 'not_null' => 1,'default' => 0),
 									            'ResourceId'				=>	Array('type' => 'int', 'default' => null),
 									            'ParentPath'				=>	Array('type' => 'string', 'default' => null),
 									            'TreeLeft'					=>	Array ('type' => 'int', 'not_null' => 1, 'default' => 0),
@@ -259,7 +259,7 @@
 									            'NewItem'					=>	Array('type' => 'int', 'formatter' => 'kOptionsFormatter', 'options' => Array (2 => 'la_Auto', 1 => 'la_Always', 0 => 'la_Never'), 'use_phrases' => 1,  'not_null' => 1, 'default' => 2),
 									            'PopItem'					=>	Array('type' => 'int', 'formatter' => 'kOptionsFormatter', 'options' => Array (2 => 'la_Auto', 1 => 'la_Always', 0 => 'la_Never'), 'use_phrases' => 1,  'not_null' => 1, 'default' => 2),
 									            'Modified'					=>	Array('type' => 'int', 'formatter' => 'kDateFormatter', 'not_null' => 1,'default' => '#NOW#'),
-									            'ModifiedById'				=>	Array('type' => 'int', 'formatter' => 'kLEFTFormatter', 'options' => Array(-1 => 'root', -2 => 'Guest'),'left_sql'=>'SELECT %s FROM '.TABLE_PREFIX.'PortalUser WHERE `%s` = \'%s\'', 'left_key_field' => 'PortalUserId', 'left_title_field' => 'Login', 'not_null' => 1,'default' => 0),
+									            'ModifiedById'				=>	Array('type' => 'int', 'formatter' => 'kLEFTFormatter', 'error_msgs' => Array ('invalid_option' => '!la_error_UserNotFound!'), 'options' => Array(-1 => 'root', -2 => 'Guest'),'left_sql'=>'SELECT %s FROM '.TABLE_PREFIX.'PortalUser WHERE `%s` = \'%s\'', 'left_key_field' => 'PortalUserId', 'left_title_field' => 'Login', 'not_null' => 1,'default' => 0),
 									            'CategoryTemplate'			=>	Array('type' => 'string', 'not_null' => 1, 'default' => ''),
 									            'CachedCategoryTemplate'	=>	Array('type' => 'string', 'not_null' => 1, 'default' => ''),
 									        ),