Solved in 2.5.1, according to this
filosofo: That plugin was my saviour 🙂
How utterly bizarre, whenever I paste http://www.photocritic.org/feed into FireFox, it says:
XML Parsing Error: no element found
Location: http://www.photocritic.org/feed
Line Number 2, Column 1:
However, if I look at it in Safari, it looks fine.
