Saving the new/edited campaign shows weird confirmation on IE 9

[ctrance]

I was editing a campaign then clicked Save button. This message shows - Do you want to open or save update16f71030 from test.ohmage.org?. I chose Open then was prompted
"Open with?", so I selected IE and the browser showed this message - {"result":"success"}. On other browsers, upon clicking Save button I was just redirected back to Campaigns list.

Happens on saving new campaign as well.