diff -r c3c30f25c723 -r 691c5cd3fb93 rt/launcher/src/main/resources/org/apidesign/bck2brwsr/launcher/harness.xhtml
--- a/rt/launcher/src/main/resources/org/apidesign/bck2brwsr/launcher/harness.xhtml	Tue Apr 02 15:52:25 2013 +0200
+++ b/rt/launcher/src/main/resources/org/apidesign/bck2brwsr/launcher/harness.xhtml	Thu Apr 18 05:47:45 2013 +0200
@@ -37,7 +37,12 @@
         <div id="bck2brwsr.fragment"/>
         
         <script type="text/javascript">
-            vm.loadClass('org.apidesign.bck2brwsr.launcher.impl.Console').harness__VLjava_lang_String_2('$U/../data');
+            try {
+                var inst = vm.loadClass('org.apidesign.bck2brwsr.launcher.impl.Console').newInstance();
+                inst.harness('$U/../data');
+            } catch (err) { 
+                alert('Error executing harness: ' + err); 
+            }
         </script>
     </body>
 </html>