Index: openacs-4/packages/openacs-bootstrap3-theme/resources/widgets/navigation.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/openacs-bootstrap3-theme/resources/widgets/navigation.tcl,v
diff -u -N -r1.3 -r1.4
--- openacs-4/packages/openacs-bootstrap3-theme/resources/widgets/navigation.tcl	25 Apr 2018 19:47:47 -0000	1.3
+++ openacs-4/packages/openacs-bootstrap3-theme/resources/widgets/navigation.tcl	9 May 2018 15:33:33 -0000	1.4
@@ -6,7 +6,7 @@
 if { [template::multirow exists navigation] } {
     set selected_main_nav_item ""
     if { ![info exists navigation_groups] } {
-        set navigation_groups {}
+        set navigation_groups [list]
     }
     for {set i 1} {$i <= [template::multirow size navigation]} {incr i} {
         template::multirow get navigation $i
@@ -24,7 +24,7 @@
 #    template::multirow get navigation $i
 #    ns_log notice [array get navigation]
 #}
-array set submenus {}
+array set submenus [list]
 for {set i 1} {$i <= [template::multirow size navigation]} {incr i} {
     template::multirow get navigation $i
     if {$navigation(display_template) ne ""} {