Error transfering a file

Hi.

I'm using winSCP v 5.7 (Build 5125) on a laptop acer TravelMate 5720, S.O. Windows 8 Pro (reinstalled today).

The protocol used is FTP and the transfer Settings: Default.

The error appears when I upload the file tmp1.txt attached, doing drag&drop from the GUI Commander. On my internet's server I receive the file tmp2.txt attached. As you can see on the line 202, appears repeated/replaced the chars with the first 48 chars of the file.

I have tried the portable version and the appears the same too.

Thanks in advance for your help.
jaz

Hi.

The problem was caused by AVG Antivirus Free Edition 2015. When it is disabled the file is received Ok.

Thanks for your attention,
jaz