Index: openacs-4/packages/forums/www/admin/subscribe-others-2.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/forums/www/admin/subscribe-others-2.tcl,v
diff -u -N -r1.11.2.1 -r1.11.2.2
--- openacs-4/packages/forums/www/admin/subscribe-others-2.tcl	1 Sep 2020 15:19:33 -0000	1.11.2.1
+++ openacs-4/packages/forums/www/admin/subscribe-others-2.tcl	1 Sep 2020 17:30:27 -0000	1.11.2.2
@@ -112,7 +112,9 @@
 
 		    # create new user
 		    set user_exists_p [db_string user_id {
-                        select exists (select 1 from parties where email = lower(:email))
+                        select case when exists
+                        (select 1 from parties where email = lower(:email))
+                        then 1 else 0 end
                         from dual
                     }]