Example of the error XMLTV GUI gives me:
20:42:00 - Radio Times returned a zero sized reply for channel Film4[
Major updates:
tv_grab_uk_rt hundreds of changes, upgrade strongly recommended
USAGE
First run tv_grab_uk_rt --configure to choose which channels you want to
receive listings for. Then run tv_grab_uk_rt with no arguments to get
around 14 days of listings for your configured channels.
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE tv SYSTEM "xmltv.dtd">
<tv date="Tue, 03 Aug 2010 04:45:52 GMT" source-info-url="http://www.radiotimes.com" source-info-name="Radio Times XMLTV Service" source-data-url="http://xmltv.radiotimes.com/xmltv/channels.dat" generator-info-name="XMLTV/0.5.57, tv_grab_uk_rt 1.286, 2010/04/21 05:24:40 " generator-info-url="http://www.xmltv.org">
<channel id="south.bbc1.bbc.co.uk">
<display-name>BBC One South</display-name>
<icon src="http://www.lyngsat-logo.com/logo/tv/bb/bbc_one_south.jpg" />
</channel>
<channel id="bbcthree.bbc.co.uk">
<display-name>BBC Three</display-name>
<icon src="http://www.lyngsat-logo.com/logo/tv/bb/bbc_three.jpg" />
</channel>
<channel id="south.bbc2.bbc.co.uk">
<display-name>BBC Two South</display-name>
<icon src="http://www.lyngsat-logo.com/logo/tv/bb/bbc2.jpg" />
</channel>
<channel id="channel4.com">
<display-name>Channel 4</display-name>
<icon src="http://www.lyngsat-logo.com/logo/tv/cc/channel4.jpg" />
</channel>
<channel id="dave.uktv.co.uk">
<display-name>Dave</display-name>
<icon src="http://www.lyngsat-logo.com/logo/tv/uu/uktv_dave.jpg" />
</channel>
<channel id="e4.channel4.com">
<display-name>E4</display-name>
<icon src="http://www.lyngsat-logo.com/logo/tv/ee/e4_uk.jpg" />
</channel>
<channel id="filmfour.channel4.com">
<display-name>Film4</display-name>
<icon src="http://www.lyngsat-logo.com/logo/tv/ff/film4.jpg" />
</channel>
<channel id="channel5.co.uk">
<display-name>five</display-name>
<icon src="http://www.lyngsat-logo.com/logo/tv/ff/five.jpg" />
</channel>
<channel id="fiveusa.channel5.co.uk">
<display-name>Five USA</display-name>
<icon src="http://www.lyngsat-logo.com/logo/tv/ff/five_usa.jpg" />
</channel>
<channel id="fiver.channel5.co.uk">
<display-name>Fiver</display-name>
<icon src="http://www.lyngsat-logo.com/logo/tv/ff/fiver.jpg" />
</channel>
<channel id="more4.channel4.com">
<display-name>more4</display-name>
<icon src="http://www.lyngsat-logo.com/logo/tv/mm/more4.jpg" />
</channel>
<channel id="freeview.1.virginmedia.com">
<display-name>Virgin 1 (Freeview, Not Wales)</display-name>
<icon src="http://www.lyngsat-logo.com/logo/tv/vv/virgin_1.jpg" />
</channel>
</tv>