Index: openacs-4/packages/xowiki/tcl/xowiki-procs.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/xowiki/tcl/xowiki-procs.tcl,v
diff -u -r1.316 -r1.317
--- openacs-4/packages/xowiki/tcl/xowiki-procs.tcl	29 Dec 2008 02:42:40 -0000	1.316
+++ openacs-4/packages/xowiki/tcl/xowiki-procs.tcl	30 Dec 2008 16:24:12 -0000	1.317
@@ -1377,6 +1377,7 @@
     if {[my exists page_order]} {
       set page_order [string trim $value " ."]
       my page_order $page_order
+      return [expr {![regexp {[^0-9a-zA-Z_]} $page_order]}]
     }
     return 1
   }