So I don’t know enough about image widgets to know why this isn’t rendering, but have you checked the source using developer tools or similar (in Chrome)? If it’s not outputting a correct img tag there then maybe try rendering with a template widget and drop the img html tag in there with the src attribute pointing at your image?
I tried that as well and that does not work. What’s funny is when I use developer tools to look at the image in habpanel and click to open in a new window it loads fine…there must be something going on with habpanel.