In the section:
>-- Package-specific info:
>
> Boot method: started with DVD ISO then chosen to download packeges
> from the network
> Image version: DVD ISO Image: Debian GNU/Linux 7.6.0 _Wheezy_ - Official amd64
> DVD Binary-1 20140712-14:11, I guess the url is
> http://cdimage.debian.org/cdimage/ar
the URL has been truncated. The correct URL of the "Image version" is:
http://cdimage.debian.org/cdimage/archive/7.6.0/amd64/iso-dvd/debian-7.6.0-amd64-DVD-1.iso