'Host hasn't answered...'

I'm using WinSCP, Version 2.2.0 (Build 122). I've used in successfully for the past few months. However, for the past few days, when I have tried to upload a file, I get the following message: "Host hasn't answered for 15 seconds", with the only options being to Abort or Retry. Each time I click the 'Retry' button, I get the same message again within a couple of minutes or so.

If anyone has an idea of what could be causing this problem, I would greatly appreciate any suggestions. (Please note I am NOT a a technician or programmer, just an average computer user and this program had been recommended to me by someone else.)

Thanks.

Mike
eoninc@yahoo.com

With some shells/servers this happens when you do not have SCP in path (or it is not present at all). It is possible that your administrator removed it. Have you tried SFTP?