HELL-o!

I'm trying to grab this site: <http://kospel.pl> (I work for this company), but
I have a problem with the download section of the website. The site is based
on Joomla with phocadownload module for the downloads.

All files when clicked in the browser are redirected by a php script to the
actual file, and HTTrack can't get them (or at least I don't know how to do
it)

The error I get for all the files:
10:48:26	Error: 	"Error attempting to solve status 206 (partial file)" (-5)
after 2 retries at link
kospel.pl/pl/do-pobrania/category/20-inne.html?download=223%3Awykaz_serwisow
(from kospel.pl/pl/serwis.html)
(it's similar for all other files)

I try to get this with this httrack command:
httrack <http://kospel.pl> -O "/home/ck/websites/kospel www" -%v -s0 -%l "pl, *"
-%P -%B -b1 -n

this set of options is as close to a good solution I could get, but I can't
figure out how to get those download files.