Index: openacs-4/packages/xowiki/tcl/upgrade/upgrade.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/xowiki/tcl/upgrade/upgrade.tcl,v
diff -u -N -r1.12 -r1.13
--- openacs-4/packages/xowiki/tcl/upgrade/upgrade.tcl	7 Aug 2017 23:48:31 -0000	1.12
+++ openacs-4/packages/xowiki/tcl/upgrade/upgrade.tcl	5 Oct 2017 12:20:25 -0000	1.13
@@ -720,6 +720,28 @@
 
     }
 
+    set v 5.10.0d2
+    if {[apm_version_names_compare $from_version_name $v] == -1 &&
+        [apm_version_names_compare $to_version_name $v] > -1} {
+      ns_log notice "-- upgrading to $v"
+
+      foreach package_id [::xowiki::Package instances -closure true] {
+        ns_log notice "::xowiki::Package initialize -package_id $package_id -init_url false"
+        if {[catch {
+          ::xowiki::Package initialize -package_id $package_id -init_url false
+        } errorMsg]} {
+          ns_log notice "Could not initialize package '$package_id': $errorMsg"
+          continue
+        }
+        ns_log notice "update prototype page"
+        # reload updated prototype pages. If new "www"-prefix does not work yet,
+        # try old format
+        if {[catch {$package_id www-import-prototype-page categories-portlet}]} {
+          $package_id import-prototype-page categories-portlet
+        }
+      }
+    }
+
   }
     
 }