Index: trunk/src/org/openstreetmap/josm/gui/layer/AbstractTileSourceLayer.java
===================================================================
--- trunk/src/org/openstreetmap/josm/gui/layer/AbstractTileSourceLayer.java	(revision 10824)
+++ trunk/src/org/openstreetmap/josm/gui/layer/AbstractTileSourceLayer.java	(revision 10826)
@@ -1147,4 +1147,5 @@
             if (img == null) {
                 missed.add(new TilePosition(tile));
+                return;
             }
             img = applyImageProcessors((BufferedImage) img);