First of all it is not the same problem as the TILES-201 issue. >From your stacktrace I suppose that you are trying to render the ".welcomeat" tiles definition. Check if: - you have this definition in your tiles-defs.xml - Tiles loads correctly the Tiles definition files at startup (i.e. check the log at startup). - possibly, use type="definition" when you put the attribute, if it still does not work.
Antonio
