Index: openacs-4/packages/xowiki/tcl/bootstrap-procs.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/xowiki/tcl/bootstrap-procs.tcl,v
diff -u -r1.11.2.13 -r1.11.2.14
--- openacs-4/packages/xowiki/tcl/bootstrap-procs.tcl	3 Feb 2020 22:21:22 -0000	1.11.2.13
+++ openacs-4/packages/xowiki/tcl/bootstrap-procs.tcl	6 Feb 2020 05:25:29 -0000	1.11.2.14
@@ -452,6 +452,11 @@
           foreach field [[self]::__columns children] {
             if {[$field hide]} continue
             if {[$field istype HiddenField]} continue
+            if {![$field exists CSSclass]} {
+              # TODO: remove me when message does not show up
+              ns_log warning "CSSclass missing $field\n[$field serialize]"
+              $field set CSSclass ""
+            }
             set CSSclass [list "list" {*}[$field CSSclass]]
             html::td [concat [list class  $CSSclass] [$field html]] {
               $field render-data $line