Index: openacs-4/packages/acs-subsite/www/admin/rel-types/mapping-remove.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/acs-subsite/www/admin/rel-types/mapping-remove.tcl,v
diff -u -N -r1.5 -r1.6
--- openacs-4/packages/acs-subsite/www/admin/rel-types/mapping-remove.tcl	7 Aug 2017 23:47:58 -0000	1.5
+++ openacs-4/packages/acs-subsite/www/admin/rel-types/mapping-remove.tcl	21 Jan 2018 00:35:29 -0000	1.6
@@ -27,8 +27,10 @@
        and t.object_type = g.rel_type
        and t2.object_type = g.group_type
 }] } {
-    ad_return_error "Relation already removed." "Please back up and reload"
-    return
+    ad_return_error \
+        "Relation already removed." \
+        "Please back up and reload"
+    ad_script_abort
 }
 
 set export_vars [export_vars -form {group_rel_type_id return_url}]