--- fsl/src/misc_tcl/fsl_exec.tcl.orig	2017-06-12 17:54:14.000000000 -0400
+++ fsl/src/misc_tcl/fsl_exec.tcl	2017-06-12 18:45:07.176756012 -0400
@@ -175,6 +175,7 @@ proc fsl:exec { thecommand args } {
 	set logout ""
     }
 
+    if { ! [ info exists ::errorCode ] } { set ::errorCode "NONE" }
     # run and log the actual command
     if { $do_logout } {
 	fsl:echo $logout "\n$thecommand"