Index: openacs-4/packages/acs-templating/tcl/query-procs.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/acs-templating/tcl/query-procs.tcl,v
diff -u -r1.34.2.2 -r1.34.2.3
--- openacs-4/packages/acs-templating/tcl/query-procs.tcl	10 Sep 2015 07:54:15 -0000	1.34.2.2
+++ openacs-4/packages/acs-templating/tcl/query-procs.tcl	5 Sep 2016 11:22:22 -0000	1.34.2.3
@@ -766,7 +766,7 @@
       set index [lindex $args 0]
       set column [lindex $args 1]
       # Set an array reference if no column is specified
-      if {$column eq {}} {
+      if {$column eq ""} {
 
         # If -local was specified, the upvar is done with a relative stack frame
         # index, and we must take into account the fact that the uplevel moves up
@@ -780,9 +780,14 @@
         }
 
       } else {
-        # If a column is specified, just return the value for it
-        upvar $multirow_level_up $name:$index arr
-        return $arr($column)
+          # If a column is specified, just return the value for it
+          upvar $multirow_level_up $name:$index arr
+          if {[info exists arr($column)]} {
+              return $arr($column)
+          } else {
+              ns_log warning "can't obtain template variable form ${name}:${index}: $column"
+              return ""
+          }
       }
     }