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 -r1.189.2.53 -r1.189.2.54
--- openacs-4/packages/acs-tcl/tcl/utilities-procs.tcl	3 Jun 2020 18:41:03 -0000	1.189.2.53
+++ openacs-4/packages/acs-tcl/tcl/utilities-procs.tcl	10 Jun 2020 08:56:47 -0000	1.189.2.54
@@ -836,10 +836,13 @@
 
     if { $entire_form_p } {
         set the_form [ns_getform]
-        for { set i 0 } { $i < [ns_set size $the_form] } { incr i } {
-            set varname [ns_set key $the_form $i]
-            set varvalue [ns_set value $the_form $i]
-            lappend noprocessing_vars [list $varname $varvalue]
+        # ns_getform will return the empty string outside a connection
+        if { $the_form ne "" } {
+            for { set i 0 } { $i < [ns_set size $the_form] } { incr i } {
+                set varname [ns_set key $the_form $i]
+                set varvalue [ns_set value $the_form $i]
+                lappend noprocessing_vars [list $varname $varvalue]
+            }
         }
     }