I did, and got the standard broken picture symbol. Tried again now, though, and it loaded okay.
If I still remember my HTML, I think the pictures are stored remotely (which IMHO is still the right way to go, as you're keeping the local app to the necessary minimum), so whenever there's a connection problem (or the app is loaded while offline) they won't load. Consider adding alt text for these scenarios, and you've basically covered your bases.
I look forward to the future versions. As I wrote earlier, I feel this has a lot of potential