Index: trunk/core/units/general/helpers/multilanguage.php
===================================================================
diff -u -N -r6093 -r7391
--- trunk/core/units/general/helpers/multilanguage.php	(.../multilanguage.php)	(revision 6093)
+++ trunk/core/units/general/helpers/multilanguage.php	(.../multilanguage.php)	(revision 7391)
@@ -72,15 +72,12 @@
 			return $fields_found;
 		}
 
-		function readTableStructure($table_name, $refresh=false)
+		function readTableStructure($table_name, $refresh = false)
 		{
-			static $structure_status = Array();
-
-			if ($refresh || !getArrayValue($structure_status, $table_name)) {
+//			if ($refresh || !getArrayValue($structure_status, $prefix.'.'.$table_name)) {
 				$this->curStructure = $this->Conn->Query('DESCRIBE '.$table_name, 'Field');
 				$this->curIndexCount = count($this->Conn->Query('SHOW INDEXES FROM '.$table_name));
-				$structure_status[$table_name] = true;
-			}
+//			}
 		}
 
 		/**
@@ -113,7 +110,7 @@
 						unset($this->curFields[$field_name]);
 						continue;
 					}
-
+					
 					$created_count = $this->getCreatedCount($field_name);
 					$create_count = $this->languageCount - $created_count;
 					if ($create_count > 0) {
@@ -204,6 +201,8 @@
 			}
 
 			$ret = ' ';
+			$ml_field = preg_replace('/l(.*)_(.*?) (.*)/', '\\2', $field_mask);
+			
 			$i_count = $start_index + $create_count;
 			while ($start_index < $i_count) {
 				list($prev_field,$type) = explode(' ', sprintf($field_mask, $start_index - 1) );
@@ -226,7 +225,10 @@
 				if ($this->curIndexCount < 32 && ($start_index == $this->Application->GetDefaultLanguageId() || !$single_lang)) {
 					// create index for primary language column + for all others (if multiple languages installed)
 					list($field_name, $field_params) = explode(' ', $field_expression, 2);
-					$ret .= 'ADD INDEX (`'.$field_name.'` (5) ), ';
+					
+					$index_type = isset($this->curFields[$ml_field]['index_type']) ? $this->curFields[$prev_field]['index_type'] : 'string';
+					
+					$ret .= $index_type == 'string' ? 'ADD INDEX (`'.$field_name.'` (5) ), ' : 'ADD INDEX (`'.$field_name.'`), ';
 					$this->curIndexCount++;
 				}