Index: /trunk/src/org/openstreetmap/josm/actions/AddImageryLayerAction.java
===================================================================
--- /trunk/src/org/openstreetmap/josm/actions/AddImageryLayerAction.java	(revision 11625)
+++ /trunk/src/org/openstreetmap/josm/actions/AddImageryLayerAction.java	(revision 11626)
@@ -67,5 +67,8 @@
         putValue("toolbar", "imagery_" + info.getToolbarName());
         putValue("help", ht("/Preferences/Imagery"));
-        setTooltip(info.getToolTipText().replaceAll("</?html>",""));
+        String tooltip = info.getToolTipText();
+        if (tooltip != null) {
+            setTooltip(tooltip.replaceAll("</?html>", ""));
+        }
         this.info = info;
         installAdapters();