(svn r22442) -Fix: Do not popup fatal NewGRF error messages in the intro screen. The GRFs are not going to be activated there anyway and the GRF settings GUI will not display the errors either.

src/newgrf_gui.cpp

@@ -34,6 +34,9 @@
  */
 void ShowNewGRFError()
 {
+	/* Do not show errors when entering the main screen */
+	if (_game_mode == GM_MENU) return;
+
 	for (const GRFConfig *c = _grfconfig; c != NULL; c = c->next) {
 		/* We only want to show fatal errors */
 		if (c->error == NULL || c->error->severity != STR_NEWGRF_ERROR_MSG_FATAL) continue;