Too much html

webadmin/installappconfirm.php

@@ -90,7 +90,7 @@ if (isset($_POST['installconfirmsubmit'])) {
                         header("Location: http://".$host.$uri."/admin");
                     }
 
-                    $output_filename = "app_installing_progress.html.html";
+                    $output_filename = "app_installing_progress.html";
                 }
                 else {
                     // The app is already scheduled for installation