Be sure to close the window.

www/export_deadman.php

@@ -253,7 +253,11 @@ if ($result != 0) {
         }
         exit(1);
     } else {
-        exit(0);
+        if ($is_script) {
+            exit(0);
+        } else {
+            echo "<script>window.close();</script>";
+        }
     }
 }