Index: openacs-4/packages/xowiki/tcl/xowiki-callback-procs.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/xowiki/tcl/xowiki-callback-procs.tcl,v
diff -u -r1.51 -r1.52
--- openacs-4/packages/xowiki/tcl/xowiki-callback-procs.tcl	6 Nov 2008 15:58:44 -0000	1.51
+++ openacs-4/packages/xowiki/tcl/xowiki-callback-procs.tcl	17 Nov 2008 17:58:54 -0000	1.52
@@ -337,6 +337,9 @@
         [apm_version_names_compare $to_version_name $v] > -1} {
       ns_log notice "-- upgrading to $v"
 
+      # make sure, the page_order is added for the upgrade
+      ::xowiki::add_ltree_order_column
+
       # for all xowiki package instances 
       foreach package_id [::xowiki::Package instances] {
 	::xowiki::Package initialize -package_id $package_id -init_url false