--- a/web/views/tableview.py	Fri May 07 20:07:54 2010 +0200
+++ b/web/views/tableview.py	Mon May 10 15:14:13 2010 +0200
@@ -224,7 +224,7 @@
             # compute column header
             if headers is not None:
                 label = headers[displaycols.index(colindex)]
-            if colindex == mainindex:
+            if colindex == mainindex and label is not None:
                 label += ' (%s)' % self.cw_rset.rowcount
             column = TableColumn(label, colindex)
             coltype = self.cw_rset.description[0][colindex]