Index: openacs-4/packages/news-aggregator/www/aggregator.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/news-aggregator/www/aggregator.tcl,v
diff -u -N -r1.4 -r1.5
--- openacs-4/packages/news-aggregator/www/aggregator.tcl	1 Mar 2005 00:01:39 -0000	1.4
+++ openacs-4/packages/news-aggregator/www/aggregator.tcl	7 Apr 2018 16:58:52 -0000	1.5
@@ -45,7 +45,7 @@
         -description $description \
         -public_p $public_p
     
-    if { [exists_and_not_null return_url] } {
+    if { ([info exists return_url] && $return_url ne "") } {
         ad_returnredirect $return_url
     } else {
         ad_returnredirect settings
@@ -58,7 +58,7 @@
                                -description $description \
                                -public_p $public_p]
     
-    if { [exists_and_not_null return_url] } {
+    if { ([info exists return_url] && $return_url ne "") } {
         ad_returnredirect $return_url
     } else {
         ad_returnredirect "[ad_conn package_url]$new_aggregator_id"