Hello,
I posted this successful workaround in the in the iTunes for Windows section about the same error, but it works fine for Mac too. Can't leave you guys hanging!
Clicking this link gives you all the genres of iTunes Radio:
http://pri.kts-af.net/xml/index.xml?sid=09A05772824906D82E3679D21CB1158B&tuning_ id=1
Each genre has a unique number as menu_id in the XML, for example 70's Radio has 10037.
<kb:menu_record>
<kb:name>'70s Retro</kb:name>
<kb:menu_id>10037</kb:menu_id>
<kb:pass_count>5</kb:pass_count>
</kb:menu_record>
Use the link below, replacing tuning_id=10037 with the genre you want to find from the previous link.
http://pri.kts-af.net/xml/index.xml?sid=09A05772824906D82E3679D21CB1158B&tuning_ id=10037&show_field[]=description&show_field[]=long_description&show_field[]=num_users&show_field[] =max_users
This will show you what iTunes would have refreshed if it hadn't come back with an error.
Each station has a XML entry:
<kb:station_record><kb:esid>2d4a269f369b4a3013b6f8a68b2a1654</kb:esid>
<kb:station>#Musik.Goldies on RauteMusik.FM</kb:station>
<kb:description>#Musik.Goldies - 24/7 hours open - Old but Gold!</kb:description>
<kb:station_url_record>
<kb:url_no>1</kb:url_no>
<kb:url>http://pri.kts-af.net/redir/index.pls?esid=2d4a269f369b4a3013b6f8a68b2a1654&url_ no=1&client_id=7&uid=68efed4d03ec7e45fd3978262c107180&clicksrc=xml</kb:url>
<kb:status_code>A</kb:status_code>
<kb:bandwidth_kbps>128</kb:bandwidth_kbps>
<kb:url_strength>9</kb:url_strength>
</kb:station_url_record>
</kb:station_record>
Simply copy out the URL in the <kb:url> tags and paste into your favourite web browser. It will prompt you to open iTunes or a similar program. Open with iTunes and you're done!
Not the prettiest workaround, but it works fine.
Cheers!
Bill.