--- Zope-2.7.1-b1/lib/python/ZPublisher/BaseRequest.py
+++ Zope-2.7.1-b1/lib/python/ZPublisher/BaseRequest.py  2004-06-01 20:49:10.000000000 +0200
@@ -298,13 +298,19 @@
                           "Object name begins with an underscore at: %s" % URL)
                     else: return response.forbiddenError(entry_name)

+                skipGetAttr = False
                 if hasattr(object,'__bobo_traverse__'):
                     subobject=object.__bobo_traverse__(request,entry_name)
-                    if type(subobject) is type(()) and len(subobject) > 1:
+                    if subobject == None:
+                        skipGetAttr = False
+                    elif type(subobject) is type(()) and len(subobject) > 1:
                         # Add additional parents into the path
                         parents[-1:] = list(subobject[:-1])
                         object, subobject = subobject[-2:]
-                else:
+                        skipGetAttr = True
+                    else:
+                        skipGetAttr = True
+                if not skipGetAttr:
                     try:

                         # Note - no_acquire_flag is necessary to support