diff -r 6448c284fe21 -r a6bacea2518f rt/launcher/src/main/java/org/apidesign/bck2brwsr/launcher/Bck2BrwsrLauncher.java
--- a/rt/launcher/src/main/java/org/apidesign/bck2brwsr/launcher/Bck2BrwsrLauncher.java	Mon Apr 08 16:51:30 2013 +0200
+++ b/rt/launcher/src/main/java/org/apidesign/bck2brwsr/launcher/Bck2BrwsrLauncher.java	Thu Apr 25 16:17:48 2013 +0200
@@ -460,6 +460,11 @@
             }
             throw new IOException("Can't find " + resource);
         }
+
+        @Override
+        public String getModule(String resource) throws IOException {
+            return null;
+        }
     }
 
     private static class Page extends HttpHandler {