Broken images. See screenshot. The first image, for the HTML5 project, links to this:
But that won't load in my browser.
Instead, THIS image DOES load:
Seems you need one extra level of escapes: `%252F` instead of just `%2F` for those slashes ( / ).
Could your filenames simply be images-wizards-html5.png to avoid the need for hexcode escapes?