Index: openacs-4/packages/acs-tcl/tcl/exception-procs.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/acs-tcl/tcl/exception-procs.tcl,v
diff -u -r1.3 -r1.3.10.1
--- openacs-4/packages/acs-tcl/tcl/exception-procs.tcl	10 Jan 2007 21:22:12 -0000	1.3
+++ openacs-4/packages/acs-tcl/tcl/exception-procs.tcl	29 Sep 2013 19:23:18 -0000	1.3.10.1
@@ -45,9 +45,9 @@
       }
 
       if {$matched} {
-	upvar [lindex $args [expr {$i + 1}]] var
+	upvar [lindex $args $i+1] var
 	set var $result
-	set errno [catch {uplevel [lindex $args [expr {$i + 2}]]} result]
+	set errno [catch {uplevel [lindex $args $i+2]} result]
       }
     }