Index: openacs-4/packages/xowiki/www/prototypes/bib.page
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/xowiki/www/prototypes/bib.page,v
diff -u -r1.2 -r1.3
--- openacs-4/packages/xowiki/www/prototypes/bib.page	25 Jul 2007 23:59:24 -0000	1.2
+++ openacs-4/packages/xowiki/www/prototypes/bib.page	12 Sep 2007 18:36:32 -0000	1.3
@@ -26,8 +26,10 @@
     append content "<LI>[next]</LI>\n"
   }
   EntryRenderer instproc by_date {} {
-    array set ia [my set instance_attributes]
-    return "$ia(year)-[format %2d $ia(month)]"
+    if {[my exists instance_attributes]} {
+      array set ia [my set instance_attributes]
+      return "$ia(year)-[format %2d $ia(month)]"
+    }
   }
 
   #
@@ -57,6 +59,8 @@
     my get_parameters
     set page [my info parent]
 
+    if {$entries_of eq ""} {return ""}
+
     if {[$page exists __including_page]} {
       set i [$page set __including_page]
       set exclude_item_ids [$i item_id]