Index: openacs-4/packages/dotlrn-admin/www/admin/guest-toggle.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/dotlrn-admin/www/admin/guest-toggle.tcl,v
diff -u -r1.2 -r1.3
--- openacs-4/packages/dotlrn-admin/www/admin/guest-toggle.tcl	21 Jan 2018 00:48:30 -0000	1.2
+++ openacs-4/packages/dotlrn-admin/www/admin/guest-toggle.tcl	23 Jun 2018 16:30:58 -0000	1.3
@@ -31,7 +31,10 @@
         -user_id $user_id \
         -value $guest_p
 
-util_memoize_flush_regexp  $user_id
+#
+# Flush all permission checks pertaining to this user.
+#
+permission::cache_flush -party_id $user_id
 
 ad_returnredirect $referer
 ad_script_abort