=== modified file 'exporter.py'
--- exporter.py	2012-02-28 16:16:13 +0000
+++ exporter.py	2012-05-21 19:44:20 +0000
@@ -396,7 +396,10 @@
                     (name, email, revobj.timestamp, revobj.timezone))
         elif author != committer:
             name, email = self._get_name_email(author)
-            author_info = (name, email, revobj.timestamp, revobj.timezone)
+            if(name != '') and (email != ''):
+                author_info = (name, email, revobj.timestamp, revobj.timezone)
+            else:
+                author_info = None
             more_author_info = None
         else:
             author_info = None