I believe that the Deutsche Welle site changed thus:
From
http://www.dw.de/program/tv-program-guide/s-4757-|channel
&
site {url=dw.de|timezone=
To
http://www.dw.com/en/program/tv-program-guide/s-4757-|channel
site {url=dw.com|timezone=
I may be incorrect, but worth checking?
ADDENDUM: For those looking in German use http://www.dw.com/de/programm/tv-programm/s-4765-|channel