Donwloaded file size is larger then original one.

Hello ,

I have tried to use SmartFTP 4 , and sometimes we found the downloaded file size is more larger..

for example : Original file size is 15.0 GB, but after ftp , the downloaded file size is 16 GB.

btw.. we have met that the connection is disconnected during downloading, and we have to resume it by manual.. (Several times)..

You need to provide more information (e.g. logs, instructions on how to reproduce). I'm not sure why you manually restart the download, because SmartFTP does it automatically.