I know it's just hard to believe that Internet Explorer is causing problems. <said in a sarcastic voice> When you open a kendo window more than one time in IE8 the formatting seems to get really messed up. The close button disappears and leaves a white box in it's place. It will not close the window either. Even the demo on this site messes up if you open it more than once. Modal also doesn't seem to be working in IE8. I have the latest October release of Kendo. It seems to work fine in Firefox and Safari.