"rsync: not found" error with sshwindows

[Anthony DiSante]

>> I'm trying to copy files from a Linux system to a Windows XP system 
>> running sshwindows.  I can use gFTP and log in just fine.  sshwindows 
>> is based on cygwin so you just use /cygdrive/c/ to access the Windows 
>> C: drive, etc.
>>
>> But for some reason, rsync is having problems transferring files to 
>> this system:
>>
>>
>> [1710][~]$ rsync -av /tmp/foo.txt user at windowsbox.com:/cygdrive/c/
>> user at windowsbox.com's password:
>> rsync: not found
>> rsync: connection unexpectedly closed (0 bytes read so far)
>> rsync error: error in rsync protocol data stream (code 12) at io.c(189)
>> [1701][~]$
>>
>>
>> The only thing rsync will say is "not found", no matter how many "-v"s 
>> I add to the command.  However, /tmp/foo.txt definitely exists -- I 
>> can use that same rsync command except with a different target, and it 
>> transfers fine. And /cygdrive/c/ definitely exists on the Windows 
>> system; gFTP is able to read & write that location with no problems, 
>> as are the scp and sftp commands-line tools.
>>
>> Is there a way I can get rsync to tell me exactly what it is that's 
>> "not found"?  And assuming it is referring to the /cygdrive/c/ path on 
>> the Windows system, does anyone have any idea why rsync can't see it?
 >
 > Have you checked that rsync works on the shell of Windows to which ssh
 > connects?
 >
 > Anyway, the error message should say "rsync (server side): not found" Or
 > even better: "Rsync program not found on server machine, please, give
 > the location using --rsync-path option".

Actually, rsync is not the transport in this scenario, SSH is.  The Windows 
system doesn't need to have rsync installed.  I'm using rsync because I want 
to sync many files within the directory tree (not shown in my example, which 
was simplified to just foo.txt to show the error).

-Anthony DiSante