Using Geoserver 2.0.2 on Windows. Half of the tiles in my overlays fail to 
display. The missing tiles and the produced tiles form a very nice chessboard 
pattern. Not very useful. I have tried to figure out what the problem could be, 
and I have so far not succeeded. The code is available below. As for the map 
just think of a chessboard where every other square says:

"code="LayerNotDefined" could not find la [rest is gone off the tile]
Inos:inos_1990"

Cheers!

Ragnvald

<script type = "text/javascript">
        var format = 'image/png';

        var map,inos_1990;

        function init(){

        map_controls = [ new OpenLayers.Control.OverviewMap(),
                           new 
OpenLayers.Control.LayerSwitcher({'ascending':true}),
                           new OpenLayers.Control.PanZoomBar(),
                           new OpenLayers.Control.MouseToolbar(),
                           new OpenLayers.Control.KeyboardDefaults()];


      var urlArray = ["http://localhost/geoserver/wms?service=wms";,
                        "http://localhost/geoserver/wms?service=wms";,
                        "http://localhost/geoserver/wms?service=wms";];

        var bounds  =  new 
OpenLayers.Bounds(1057201.2039165555,1.2545904226990476E7,3765604.414539889,1.6119143121091189E7);
 //minX,minY,maxX,maxY values

        map = new OpenLayers.Map( 'map', {
                                            projection: "EPSG:900913",
                                            maxExtent: bounds,
                                            maxResolution: 'auto', // tilsvarer 
zoom level 3 (hele er 21664.0)
                                            units: 'm',
                                          controls: map_controls
                                          } );


        var ls = map.getControlsByClass('OpenLayers.Control.LayerSwitcher')[0];

        ls.maximizeControl();


         layer = new OpenLayers.Layer.WMS(
          "OpenLayers WMS",
          "http://labs.metacarta.com/wms/vmap0";,
          {layers: 'basic',
          srs: 'EPSG:900913'}
          );

          map.addLayer(layer);



        inos_1990 = new OpenLayers.Layer.WMS( "INOS 1990 fastland",
                                     urlArray,
                                   {
                                     layers: 'inos:inos_1990',
                                     styles: '',
                                     srs: 'EPSG:900913',
                                     format: format,
                                                                   transparent: 
"true"
                                                                                
    },
                                                                                
    {opacity:0.5},
                                 { singleTile: true, ratio: 1 },
                                  {isBaseLayer: false, visibility: true}
                                     );

        map.addLayer(inos_1990);

        inos_1990.setVisibility(false);

        inos_1990_pyram_f = new OpenLayers.Layer.WMS( "INOS vurdering 
pyramiden",
                                     urlArray,
                                   {
                                     layers: 'inos:inos_1990_pyram_f',
                                     styles: '',
                                     srs: 'EPSG:900913',
                                     format: format,
                                                 transparent: "true"
                                                                },
                                                                {opacity:0.5},
                                     {isBaseLayer: false, visibility: true}
                                     );

        map.addLayer(inos_1990_pyram_f);

        inos_1990_pyram_f.setVisibility(false);


        map.zoomToExtent(bounds);

        //map.setCenter(new OpenLayers.LonLat(lon, lat), zoom);

        }
</script>
[cid:[email protected]]

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