Index: trunk/core/install/upgrades.php
===================================================================
diff -u -N -r8038 -r8039
--- trunk/core/install/upgrades.php	(.../upgrades.php)	(revision 8038)
+++ trunk/core/install/upgrades.php	(.../upgrades.php)	(revision 8039)
@@ -14,11 +14,13 @@
 		 */
 		function Upgrade_4_0_2($mode)
 		{
-			$ml_helper =& $this->Application->recallObject('kMultiLanguageHelper');
-			/* @var $ml_helper kMultiLanguageHelper */
-			
-			$lang_count = $ml_helper->getLanguageCount();
-			$this->Application->UnitConfigReader->iterateConfigs( Array (&$this, 'updateTextFields', $lang_count) );
+			if ($mode == 'after') {
+				$ml_helper =& $this->Application->recallObject('kMultiLanguageHelper');
+				/* @var $ml_helper kMultiLanguageHelper */
+				
+				$lang_count = $ml_helper->getLanguageCount();
+				$this->Application->UnitConfigReader->iterateConfigs( Array (&$this, 'updateTextFields', $lang_count) );
+			}
 		}
 
 		/**
Index: trunk/core/kernel/utility/unit_config_reader.php
===================================================================
diff -u -N -r8029 -r8039
--- trunk/core/kernel/utility/unit_config_reader.php	(.../unit_config_reader.php)	(revision 8029)
+++ trunk/core/kernel/utility/unit_config_reader.php	(.../unit_config_reader.php)	(revision 8039)
@@ -736,6 +736,16 @@
 	{
 		return isset($this->prefixFiles[$prefix]) ? true : false;
 	}
+	
+	function iterateConfigs($callback_function)
+	{
+		$this->includeConfigFiles(MODULES_PATH); //make sure to re-read all configs
+		$this->AfterConfigRead();
+		
+		foreach ($this->configData as $prefix => $config_data) {
+			$callback_function[0]->$callback_function[1]($prefix, $config_data, $callback_function[2]);
+		}
+	}
 
 }
 
Index: trunk/core/units/general/helpers/multilanguage.php
===================================================================
diff -u -N -r7855 -r8039
--- trunk/core/units/general/helpers/multilanguage.php	(.../multilanguage.php)	(revision 7855)
+++ trunk/core/units/general/helpers/multilanguage.php	(.../multilanguage.php)	(revision 8039)
@@ -79,18 +79,6 @@
 				$this->curIndexCount = count($this->Conn->Query('SHOW INDEXES FROM '.$table_name));
 //			}
 		}
-		
-		/**
-		 * Checks if table exists in database
-		 *
-		 * @param string $table_name
-		 * @return bool
-		 */
-		function tableExists($table_name)
-		{
-			$sql = 'SHOW TABLES LIKE "'.$table_name.'"';
-			return $this->Conn->Query($sql) ? true : false;
-		}
 
 		/**
 		 * Creates missing multilanguage fields in table by specified prefix
@@ -107,7 +95,7 @@
 			$table_name = $this->Application->getUnitOption($prefix, 'TableName');
 			$this->curFields = $this->Application->getUnitOption($prefix, 'Fields');
 
-			if (!($table_name && $this->curFields) || ($table_name && !$this->tableExists($table_name))) {
+			if (!($table_name && $this->curFields) || ($table_name && !$this->Conn->TableFound($table_name))) {
 				// invalid config found or prefix not found
 				return true;
 			}