Index: openacs-4/packages/acs-admin/www/apm/version-parameters.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/acs-admin/www/apm/version-parameters.tcl,v
diff -u -N -r1.8 -r1.8.4.1
--- openacs-4/packages/acs-admin/www/apm/version-parameters.tcl	17 Oct 2010 21:06:07 -0000	1.8
+++ openacs-4/packages/acs-admin/www/apm/version-parameters.tcl	27 Aug 2013 11:44:43 -0000	1.8.4.1
@@ -30,7 +30,7 @@
 #DRB: sql_clauses must not contain RDBMS-specific query clauses.
 set sql_clauses ""
 
-if { [exists_and_not_null dimensional_list] } {
+if { ([info exists dimensional_list] && $dimensional_list ne "") } {
     lappend table_def [list section_name "Section:"]
     append sql_clauses [ad_dimensional_sql $dimensional_list]
 }