problems transferring ISO files

Every time I try to transfer an ISO file using FTP from my server to my PC, towards the end of the transfer, the progress bar will start going backwards and the time remaining will increase despite the fact that the transfer is still taking place. As a result the downloaded file will continue to grow in size far beyond its actual size and this will continue until I cancel the transfer. So far this has happened every time I have attempted to transfer an ISO file and every time I find the downloaded ISO to then be corrupt.

I am using WINSCP version 4.2.9(build 938) on Windows 7 Ultimate 64-bit.

Any suggestions?

Can you send me an email, so I can send you back a debug version of WinSCP to track the problem? Please include link back to this topic in your email. Also note in this topic that you have sent the email. Thanks.