File Name Problem

Smart FTP always adds an extension, i.e. (mht) to my file names when I transfer to my host client, causing display problems. How can I get Smart FTP to transfer my files exactly as they are named?

Can you post a full log, with ftp server type, and a transfer season?

BTW IMHO it must be a server side issue, SmartFTP only changes the file names to lower/uppercase/capitalize.