Copy (sys) error

I received:
"=======================================
TCC: (Sys) C:\TCMD\MyBTM.btm [51] A request to send or receive data was disallowed because the socket is not connected and (when ending on a datagram socket using a send to call) no address was supplied.
TCC: C:\TCMD\MyBTM.btm [51] FTP protocol error: 550 Failed to open file. "/version.sav""
"=======================================

and the line is : (50-52)

echo Checking prospero.unm.edu...
copy /a: /e /f /g /md /nr /s /u /v /w...

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