[Savannah-hackers] Delete file

[Della Bianca Giuseppe]

Hi.
I do not succeed to use sftp of openssh (for cygwin) in order cancelling
one file from my GesConf project  :
sftp -1 address@hidden:/upload/gesconf
Connecting to subversions.gnu.org...
You tried to execute: `/usr/local/bin/cvssh -c /usr/sbin/sftp-server'.
Sorry, you are only allowed to execute :
CVS_RSH=ssh cvs commands
rsync from /cvsroot or /upload.
rsync to /upload.
sftp to and from /upload.
Connection closed

Which thing I must control in order to understand where is the problem?

Regards.
                Dbg