I've installed the Wordress version (1.0.12) at http://www.rocknet.nl and in IE8 I get the message "Stack overflow at line 67" when I click on one of te flags. All works fine in Firefox 3.
Edit: if ran my site through the W3C validator, and some errors came up; nothing crucial what could cause this problem. I've also tested it in a IE8 32 bit browser and it works fine. The problem only seems to occur in IE8 64 bit as far as I know.
Please don't sent me to the Microsoft website lol, I've been searching like hell the past few hours I wanna solve this, cause it's a great plugin and far too awesome to deactivate and delete...