"Connection has unexpectedly closed...."

Hi, I am using the latest version of WinSCP, and seems to work most of the time. However, on some files it says "Connection has unexpectedly closed server sent command exit status 0". I thought it might be a problem with my internet connection, but it the session always mysteriously times out and does this error message at about 23% for every single video file I try to upload (which are all somewhere around 10 mb in size).

This also has occurred with a few real media files I was trying to transfer, always around 97%, for files that are at most 2 mb in size.

If anyone can be of any help, that would be great.

Mail me for development version that potentially fixes the problem.