Index: branches/RC/core/units/languages/import_xml.php
===================================================================
diff -u -r8929 -r9398
--- branches/RC/core/units/languages/import_xml.php	(.../import_xml.php)	(revision 8929)
+++ branches/RC/core/units/languages/import_xml.php	(.../import_xml.php)	(revision 9398)
@@ -93,9 +93,9 @@
 				$this->tables['phrases'] = $this->Application->getUnitOption('phrases', 'TableName');
 				$this->tables['emailmessages'] = $this->Application->getUnitOption('emailmessages', 'TableName');
 			}
-			
+
 			$this->lang_object =& $this->Application->recallObject('lang.imp', null, Array('skip_autoload' => true));
-			
+
 			$sql = 'SELECT EventId, CONCAT(Event,"_",Type) AS EventMix FROM '.TABLE_PREFIX.'Events';
 			$this->events_hash = $this->Conn->GetCol($sql, 'EventMix');
 
@@ -198,7 +198,14 @@
 					if( !getArrayValue($this->current_language,'LanguageId') )
 					{
 						$this->lang_object->SetDBField('Enabled', STATUS_ACTIVE);
-						if( $this->lang_object->Create() ) $this->current_language['LanguageId'] = $this->lang_object->GetID();
+
+						if ($this->lang_object->Create()) {
+							$this->current_language['LanguageId'] = $this->lang_object->GetID();
+							if (defined('IS_INSTALL') && IS_INSTALL) {
+								// language created during install becomes admin interface language
+								$this->lang_object->setPrimary(true, true);
+							}
+						}
 					}
 					elseif($this->import_mode == LANG_OVERWRITE_EXISTING)
 					{
@@ -403,7 +410,7 @@
 			fclose($fp);
 			return true;
 		}
-		
+
 		/**
 		 * Creates new instance of LangXML_Parser class
 		 *