Index: openacs-4/packages/xotcl-core/tcl/05-db-procs.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/xotcl-core/tcl/05-db-procs.tcl,v
diff -u -N -r1.114 -r1.115
--- openacs-4/packages/xotcl-core/tcl/05-db-procs.tcl	1 Feb 2018 21:58:01 -0000	1.114
+++ openacs-4/packages/xotcl-core/tcl/05-db-procs.tcl	21 Mar 2018 19:52:50 -0000	1.115
@@ -1195,7 +1195,7 @@
           default_value min_n_values max_n_values
 
       # ignore some erroneous definitions in the acs meta model
-      if {[:exists exclude_attribute($table_name,$attribute_name)]} {
+      if {[info exists :exclude_attribute($table_name,$attribute_name)]} {
         continue
       }