Index: trunk/src/org/openstreetmap/josm/gui/layer/AbstractTileSourceLayer.java
===================================================================
--- trunk/src/org/openstreetmap/josm/gui/layer/AbstractTileSourceLayer.java	(revision 11124)
+++ trunk/src/org/openstreetmap/josm/gui/layer/AbstractTileSourceLayer.java	(revision 11125)
@@ -610,5 +610,4 @@
         FlushTileCacheAction() {
             super(tr("Flush tile cache"));
-            setEnabled(tileLoader instanceof CachedTileLoader);
         }