I have just upgraded my installation from 1.9.5 to 2.2.0. When i am using IE to upload an attachemnt IE tries to download and save YafUploader.json. Browsing the files works fine, the problem occurs when "Start upload" is clicked. When trying the same approach in Chrome everything works just fine.

I have just tried to attache a file, using IE, to this post. No problem however.

As far as I can Google this has something to do with the content type?

Is there a server or configuration parameter I am missing?

/Thomas