set localdir = "C:\some\directory"
SET ErrorMsg = "Could not change working directory to " & localdir
WORKINGDIR localdir
IFERROR goto failed
;; Do more processing here
:done
EXIT
:failed
;; There was an error, so send custom email message
SET mailbody = ErrorMsg & %crlf & %lasterrormsg
EMAIL mailbody /subject="RoboFTP Error!"
EXIT /exitcode=2000