Index: applications/viewer/jmapviewer/src/org/openstreetmap/gui/jmapviewer/tilesources/AbstractTMSTileSource.java
===================================================================
--- applications/viewer/jmapviewer/src/org/openstreetmap/gui/jmapviewer/tilesources/AbstractTMSTileSource.java	(revision 31122)
+++ applications/viewer/jmapviewer/src/org/openstreetmap/gui/jmapviewer/tilesources/AbstractTMSTileSource.java	(revision 31123)
@@ -19,5 +19,5 @@
         this.name = info.getName();
         this.baseUrl = info.getUrl();
-        if(baseUrl.endsWith("/")) {
+        if(baseUrl != null && baseUrl.endsWith("/")) {
             baseUrl = baseUrl.substring(0,baseUrl.length()-1);
         }