Index: openacs-4/packages/xowiki/tcl/xowiki-procs.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/xowiki/tcl/xowiki-procs.tcl,v
diff -u -N -r1.512 -r1.513
--- openacs-4/packages/xowiki/tcl/xowiki-procs.tcl	9 Apr 2018 08:11:05 -0000	1.512
+++ openacs-4/packages/xowiki/tcl/xowiki-procs.tcl	9 Apr 2018 08:14:23 -0000	1.513
@@ -4488,7 +4488,7 @@
       :setCSSDefaults
 
       lassign [:field_names_from_form -form $form] form_vars field_names
-      :array unset __field_in_form
+      array unset :__field_in_form
       if {$form_vars} {foreach v $field_names {set :__field_in_form($v) 1}}
       set form_fields [:create_form_fields $field_names]
       :load_values_into_form_fields $form_fields
@@ -4619,8 +4619,8 @@
   Page instproc unset_temporary_instance_variables {} {
     # don't marshall/save/cache the following vars
     #my array unset __ia
-    :array unset __field_in_form
-    :array unset __field_needed
+    array unset :__field_in_form
+    array unset :__field_needed
   }
 
   Page instproc map_categories {category_ids} {
Index: openacs-4/packages/xowiki/tcl/xowiki-www-procs.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/xowiki/tcl/xowiki-www-procs.tcl,v
diff -u -N -r1.347 -r1.348
--- openacs-4/packages/xowiki/tcl/xowiki-www-procs.tcl	9 Apr 2018 07:42:50 -0000	1.347
+++ openacs-4/packages/xowiki/tcl/xowiki-www-procs.tcl	9 Apr 2018 08:14:23 -0000	1.348
@@ -2307,8 +2307,8 @@
   FormPage instproc field_names {{-form ""}} {
     lassign [:field_names_from_form -form $form] form_vars needed_attributes
     #:msg "form=$form, form_vars=$form_vars needed_attributes=$needed_attributes"
-    :array unset __field_in_form
-    :array unset __field_needed
+    array unset :__field_in_form
+    array unset :__field_needed
     if {$form_vars} {foreach v $needed_attributes {set :__field_in_form($v) 1}}
     foreach v $needed_attributes {set :__field_needed($v) 1}