Por que essa conexão rsync inesperadamente foi fechada no Windows? [fechadas

Estou tentando usarrsync no Windows 7. Instalei o cwRsync e tentei conectar-me ao Ubuntu 9.0

$ rsync -azC --force --more-options ./ user@server:/my/path/
rsync: connection unexpectedly closed (0 bytes received so far) [receiver] 
rsync error: error in rsync protocol data stream (code 12) at io.c(600) [receiver=3.0.5]
rsync: connection unexpectedly closed (0 bytes received so far) [sender]
rsync error: error in rsync protocol data stream (code 12) at io.c(610) [sender=3.0.8]

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