Index: openacs-4/packages/xowiki/tcl/includelet-procs.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/xowiki/tcl/includelet-procs.tcl,v
diff -u -r1.39 -r1.40
--- openacs-4/packages/xowiki/tcl/includelet-procs.tcl	3 Jun 2008 11:46:53 -0000	1.39
+++ openacs-4/packages/xowiki/tcl/includelet-procs.tcl	20 Jun 2008 09:50:27 -0000	1.40
@@ -519,9 +519,10 @@
 
     #my msg "nr trees = [llength $trees], tree:name = '$tree_name'"
     if {[llength $trees] == 0} {
-      error "No category tree found\n\
+      my log "No category tree found\n\
 	(mapped trees = [llength $mapped_trees],\n\
 	tree_name = '$tree_name')"
+      return ""
     }
 
     foreach tree $trees {