transmission error

We have a user who is transmitting a file to us and its failing with
the log below. He is transmitting from a unix server to a windows
server.
He is typring sftp -v 'abc.abc.com' then he does a put filename.
The error where it says: Statting destination file is suppose to have
the file name thst its transmitting and its not there. Does anyone
have any ideas.
Thanks

scp:SshFileCopy/sshfilecopy.c:616/connect_done_cb: Connection to
remote host 'abc.abc.com', ready to serve requests.
scp:SshFCTransfer/sshfc_transfer.c:219/
transfer_get_newline_conventions: Fething source newline convention
extension data.
scp:SshFCTransfer/sshfc_transfer.c:234/
transfer_get_newline_conventions: Fething dest newline convention
extension data.
scp:SshFCTransfer/sshfc_transfer.c:240/
transfer_get_newline_conventions: Destination sftp-server didn't give
newline convention.
scp:SshFCTransfer/sshfc_transfer.c:87/fct_transfer_callback: Received
error `File not found' (2).
scp:SshFCTransfer/sshfc_transfer.c:355/transfer_prepare_base_dir: file
name: ``/var/tmp''
scp:SshFCTransfer/sshfc_transfer.c:411/transfer_prepare_base_dir:
basedir = /var/tmp
scp:SshFCTransfer/sshfc_transfer.c:673/transfer_stat_dest: Statting
destination file ``.''...
scp:SshFCTransfer/sshfc_transfer.c:87/fct_transfer_callback: Received
error `File not found' (2).
scp:SshFCTransfer/sshfc_transfer.c:87/fct_transfer_callback: Received
error `File not found' (2).

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