Re:RSS news feed problems
No idea, if the RSS feeds used to work with Tiki 1.6.1 then they may have some code changes in Tiki 1.7.1.1 that could cause problems or alternatively: some of the RSS feeds Tiki 1.6.1 was supporting were malformed and Tiki 1.7.1.1 does a better job of checking them.
Having said that I quickly checked the RSS feed you mentioned on my own Tiki 1.7 and it works fine for me.
Regards,
Pat.