Index: openacs-4/packages/dotlrn-admin/www/admin/users-chunk.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/dotlrn-admin/www/admin/users-chunk.tcl,v
diff -u -r1.2 -r1.3
--- openacs-4/packages/dotlrn-admin/www/admin/users-chunk.tcl	8 Aug 2006 21:26:31 -0000	1.2
+++ openacs-4/packages/dotlrn-admin/www/admin/users-chunk.tcl	28 Jun 2015 12:09:34 -0000	1.3
@@ -27,7 +27,7 @@
 set oacs_site_wide_admin_p [acs_user::site_wide_admin_p]
 set user_id [ad_conn user_id]
 
-if {![exists_and_not_null referer]} {
+if {(![info exists referer] || $referer eq "")} {
     set referer "[dotlrn_admin::get_admin_url]/users"
 }