diff -r 1e6536afa855 -r 025a491bad0c web/request.py
--- a/web/request.py	Tue Mar 23 17:06:05 2010 +0100
+++ b/web/request.py	Tue Mar 23 17:08:50 2010 +0100
@@ -290,7 +290,7 @@
                 breadcrumbs.append(self.url())
             else:
                 url = self.url()
-                if breadcrumbs[-1] != url:
+                if breadcrumbs and breadcrumbs[-1] != url:
                     breadcrumbs.append(url)
 
     def last_visited_page(self):