Index: openacs-4/packages/simulation/www/siminst/simulation-participants.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/simulation/www/siminst/simulation-participants.tcl,v
diff -u -N -r1.15 -r1.16
--- openacs-4/packages/simulation/www/siminst/simulation-participants.tcl	26 Apr 2018 08:56:38 -0000	1.15
+++ openacs-4/packages/simulation/www/siminst/simulation-participants.tcl	9 May 2018 15:33:33 -0000	1.16
@@ -35,7 +35,7 @@
     {workflow_id:integer(hidden) {value $workflow_id}}
 }
 
-set groups {}
+set groups [list]
 
 db_multirow -extend { group_radio } participants select_participants {
     select g.group_name,