diff -r 2b1679aa5cc1 -r 33343d6eae0a view.py
--- a/view.py	Wed Oct 20 14:50:58 2010 +0200
+++ b/view.py	Wed Oct 20 15:40:03 2010 +0200
@@ -170,7 +170,11 @@
         else:
             view_func = self.call
         stream = self.set_stream(w)
-        view_func(**context)
+        try:
+            view_func(**context)
+        except:
+            self.debug('view call %s failed (context=%s)', view_func, context)
+            raise
         # return stream content if we have created it
         if stream is not None:
             return self._stream.getvalue()