[Gwt-openlayers-users] JS issue

[fatzopilot <fat...@gm...>]

Hi list,

there seems to be something wrong with my attempts to get gwt-openlayers  
displaying mapnik generated tiles.
The showcase runs just fine, I slightly changed it to use a Mapnik backend  
instead of the WMS backend.
I did pretty much the same as here:  
http://code.google.com/p/dantwining/source/browse/trunk/gwitmap/src/com/dantwining/gwitmap/client/GwitMap.java
However, I get a "com.google.gwt.core.client.JavaScriptException:  
(TypeError): $wnd.OpenLayers.Layer.OSM.Mapnik" is not a constructor" in  
dev-mode.
Did I forget to include some JS somewhere or is there another problem?

Thanks
fatzopilot