Index: openacs-4/packages/adserver/www/index.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/adserver/www/index.tcl,v
diff -u -r1.3 -r1.4
--- openacs-4/packages/adserver/www/index.tcl	26 Apr 2018 08:56:37 -0000	1.3
+++ openacs-4/packages/adserver/www/index.tcl	9 May 2018 15:33:29 -0000	1.4
@@ -27,7 +27,7 @@
 "
 set package_id [ad_conn package_id]
 
-set ads {}
+set ads [list]
 set count 0
 db_foreach adserver_sample_groups {
     select group_key, pretty_name, adv_count, rotation_method