Index: openacs-4/packages/acs-lang/tcl/lang-message-procs.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/acs-lang/tcl/lang-message-procs.tcl,v
diff -u -r1.68.2.25 -r1.68.2.26
--- openacs-4/packages/acs-lang/tcl/lang-message-procs.tcl	12 Sep 2022 15:45:57 -0000	1.68.2.25
+++ openacs-4/packages/acs-lang/tcl/lang-message-procs.tcl	20 Sep 2022 12:07:46 -0000	1.68.2.26
@@ -669,6 +669,10 @@
 
     The frog jumped across the fence. About 50% of the time, he stumbled, or maybe it was %20 %times%.
 } {
+    if {[llength $value_array_list] % 2 != 0} {
+        ad_log error "Invalid value_array_list passed in: <$value_array_list>"
+    }
+
     array set value_array $value_array_list
     set value_array_keys [array names value_array]
     set remaining_message $localized_message