How about now SEBASTIAN? I hope it works for you in IE now?! There was (and still is) a IE issue Microsoft should solve, so I wouldn`t recommend using such a browser!
If this error still occurs then please report this.. if I´m not online: info@fiveminutecoin.com
If you tell me what exactly happend I`ll try to fix it.. It will be hard because if I test it with IE 9 it works fine for me, but please tell me what happend and I`m on it