Index: branches/unlabeled/unlabeled-1.155.2/core/kernel/application.php
===================================================================
diff -u -r5956 -r5970
--- branches/unlabeled/unlabeled-1.155.2/core/kernel/application.php	(.../application.php)	(revision 5956)
+++ branches/unlabeled/unlabeled-1.155.2/core/kernel/application.php	(.../application.php)	(revision 5970)
@@ -382,6 +382,10 @@
 				WHERE (PrimaryLang = 1) AND (Enabled = 1)';
 		$language_id = $this->Conn->GetOne($sql);
 
+		if (!$language_id && defined('IS_INSTALL') && IS_INSTALL) {
+			$language_id = 1;
+		}
+
 		return $language_id;
 	}