Index: openacs-4/packages/acs-subsite/www/admin/group-types/one.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/acs-subsite/www/admin/group-types/one.tcl,v
diff -u -N -r1.8 -r1.9
--- openacs-4/packages/acs-subsite/www/admin/group-types/one.tcl	7 Aug 2017 23:47:58 -0000	1.8
+++ openacs-4/packages/acs-subsite/www/admin/group-types/one.tcl	21 Jan 2018 00:35:29 -0000	1.9
@@ -30,8 +30,10 @@
 set package_id [ad_conn package_id]
 
 if { ![db_0or1row select_pretty_name {}] } {
-    ad_return_error "Group type doesn't exist" "Group type \"$group_type\" doesn't exist"
-    return
+    ad_return_error \
+        "Group type doesn't exist" \
+        "Group type \"$group_type\" doesn't exist"
+    ad_script_abort
 }
 
 set doc(title) [_ acs-subsite.Details_for__group_type_pretty_name]