No error messages. I am using CuteFTP. It will say
[11/21/2013 9:07:44 PM] 150 Accepted data connection
ERROR:> [11/21/2013 9:34:55 PM] Timeout (60000 ms) occurred on receiving data from the server.
[11/21/2013 9:34:55 PM] 226-File successfully transferred
226...