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 -r1.542.2.129 -r1.542.2.130
--- openacs-4/packages/xowiki/tcl/xowiki-procs.tcl	2 Jan 2022 18:07:48 -0000	1.542.2.129
+++ openacs-4/packages/xowiki/tcl/xowiki-procs.tcl	2 Jan 2022 18:13:12 -0000	1.542.2.130
@@ -3824,6 +3824,11 @@
     }
     return ""
   }
+  #
+  # Set the nsv array parsed_fcs to dummy values to avoid potential
+  # exceptions on operations requiring its existence.
+  #
+  nsv_set parsed_fcs . .
 
   PageInstance instproc field_names_from_form_constraints {} {
     set form_constraints [:get_form_constraints]