Incomplete File Transfers

I've just started using SmartFTP and I'm experiencing a problem with incomplete file transfers. I hope someone can give me a clue as to what's happening. I can sign in to my website just fine and I receive the listing of the files resident on it. However, when I try to upload files the connection closes and only a portion of each file reaches the website. For example, I just tried to transfer a 95KB file and received the following error message:

[14:19:11] Server closed connection
[14:19:11] Transfer failed.

Only 70KB of the file actually reached the website. Any suggestions? Thanks!

Use the Transfer Queue for all the transfers. Please see the tutorials at:
https://www.smartftp.com/support/howto

The transfer queue will automatically resume broken transfers.

Regards,
-Mat