jQuery fileupload not working in IE 8 and 9

Question

This code works in FF and chrome. In IE 8 or 9 I get a 500 error saying a not

Answer 1

I was able to get it working by including jquery.iframe-transport.js and then I had to remove my knockout "with" data-bind from the div to get it to work in IE8 because it worked in IE9. (I had a with binding above my posted code) Thanks for all the suggestions.