.
This looks like the webshield has blocked the download.
That means that nothing was downloaded and explains why the file was empty.
If you want more information, you can always look in the log files.
edit:
please make the link not clickable.
what was the message on the avast popup warning … you may post a screenshot
detected by the webshield as : win32:evo-gen(susp)
mail shield. ? ???
Correction: webshield. 