Index: openacs-4/packages/acs-tcl/tcl/utilities-procs.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/acs-tcl/tcl/utilities-procs.tcl,v
diff -u -r1.133.2.14 -r1.133.2.15
--- openacs-4/packages/acs-tcl/tcl/utilities-procs.tcl	14 Sep 2013 09:35:47 -0000	1.133.2.14
+++ openacs-4/packages/acs-tcl/tcl/utilities-procs.tcl	14 Sep 2013 16:34:56 -0000	1.133.2.15
@@ -2299,10 +2299,12 @@
     @see util_user_message
     @see ad_script_abort
 } {
-    if { [string is false $html_p] } {
-      	util_user_message -message $message
-    } else {
-      	util_user_message -message $message -html
+    if {$message ne ""} {
+	if { [string is false $html_p] } {
+	    util_user_message -message $message
+	} else {
+	    util_user_message -message $message -html
+	}
     }
 
     if { [util_complete_url_p $target_url] } {