diff -r 80eefca04b1e -r 59768817442a main_win.cc
--- a/main_win.cc	Thu Aug 18 13:33:49 2005 +0000
+++ b/main_win.cc	Tue Aug 23 07:36:09 2005 +0000
@@ -264,11 +264,13 @@
   if (fcdialog.run() == Gtk::RESPONSE_ACCEPT)
   {
     Glib::ustring filename = fcdialog.get_filename();
-    mapstorage.readFromFile(filename);
-    mapstorage.file_name = filename;
-    mapstorage.modified = false;
-    gd_canvas.drawGraph();
-    mapwin.update();
+    if (!mapstorage.readFromFile(filename))
+    {
+      mapstorage.file_name = filename;
+      mapstorage.modified = false;
+      gd_canvas.drawGraph();
+      mapwin.update();
+    }
   }
 }