> The problem happens for files between 2GB and 4GB. I can't really send
> you a link to such a big file. To reproduce the problem, you can
> generate one.

The problem is that the "zip" command fails to create a zip file larger
than 2GB (I get "zip I/O error: Invalid argument"). And even if it
didn't fail the internal structure of the zip file might not be exactly
the same as with other compression tools. That's why I was asking you
for an existing file.

If I give you an ssh/sftp access somewhere, would you be able to upload
such a file?