Index: trunk/src/org/openstreetmap/josm/gui/layer/AbstractTileSourceLayer.java
===================================================================
--- trunk/src/org/openstreetmap/josm/gui/layer/AbstractTileSourceLayer.java	(revision 11861)
+++ trunk/src/org/openstreetmap/josm/gui/layer/AbstractTileSourceLayer.java	(revision 11862)
@@ -1203,6 +1203,8 @@
         if (tile instanceof ReprojectionTile) {
             return ((ReprojectionTile) tile).getAnchor();
+        } else if (image != null) {
+            return new TileAnchor(new Point.Double(0, 0), new Point.Double(image.getWidth(), image.getHeight()));
         } else {
-            return new TileAnchor(new Point.Double(0, 0), new Point.Double(image.getWidth(), image.getHeight()));
+            return null;
         }
     }