I called it few moments ago in Czech board but I call it here again:
graphics.simutrans.com (http://graphics.simutrans.com) calls
Fatal error:
For more informations read (with using of translator, of course :-[ - or without using of it, if you understand Czech ;)) this topic (http://forum.simutrans.com/index.php?topic=7311.0)
Thanks for the warning, we are working on it.
EDIT: seems to be fixed.
Yes. I know. VS announced that he repaired it in Czech language board - few moments ago.