Index: openacs-4/packages/acs-subsite/tcl/group-type-procs.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/acs-subsite/tcl/group-type-procs.tcl,v
diff -u -r1.8 -r1.9
--- openacs-4/packages/acs-subsite/tcl/group-type-procs.tcl	26 Apr 2018 08:56:37 -0000	1.8
+++ openacs-4/packages/acs-subsite/tcl/group-type-procs.tcl	9 May 2018 15:33:28 -0000	1.9
@@ -106,8 +106,8 @@
 	# Store the plsql in a list so that we can choose, at the end,
 	# to either execute it or return it as a debug message
 
-	set plsql {}
-	set plsql_drop {}
+	set plsql [list]
+	set plsql_drop [list]
 
 	if { [db_table_exists $table_name] } {
 	    # What to do? Options: