Interface seems to be missing

[fergatron]

Hi, great app -- I love the fact that this exists. I see that the last update was 6 months ago. CodePen recently redesigned their layout so the pens I'm exporting now don't seem to work in your offline app. It's a issue and wanted to let you know.

Instead of the interactive interface, I'm simply getting the rendered HTML.

[GiacomoLaw]

Any update in this?