Index: openacs-4/packages/xowiki/tcl/yui-procs.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/xowiki/tcl/yui-procs.tcl,v
diff -u -r1.16.2.2 -r1.16.2.3
--- openacs-4/packages/xowiki/tcl/yui-procs.tcl	4 Jul 2019 17:51:39 -0000	1.16.2.2
+++ openacs-4/packages/xowiki/tcl/yui-procs.tcl	23 Jul 2019 14:15:00 -0000	1.16.2.3
@@ -555,8 +555,8 @@
 
   YUIDataTableRenderer instproc render {} {
     ::YUI::loader require -module "datatable"
-    if {![:isobject [self]::__actions]} {:actions {}}
-    if {![:isobject [self]::__bulkactions]} {:__bulkactions {}}
+    if {![nsf::is object [self]::__actions]} {:actions {}}
+    if {![nsf::is object [self]::__bulkactions]} {:__bulkactions {}}
     set bulkactions [[self]::__bulkactions children]
     if {[llength $bulkactions]>0} {
       set name [[self]::__bulkactions set __identifier]