Legacy ImageMagick Discussions Archive

Ive tested with latest and im having issues (PHP). Ive done some investigating and found that the URL is sending Content-Type: text/html; charset=utf-8, is it possible to tell ImageMagick that it is an image?

I have the following image:

http://www.tapcoffee.co.uk/images/bg1.jpg

I am trying to process it with ImageMagick, but receiving an error
I have tried uploading to imgur and that also fails, what is wrong with this specific image?