Oops, can’t see this photo, the frame is black :(

I’ve been looking into this and I’m not sure what the problem is.  From the server logs I can see that there were 2 image requests that failed, but it appears that it was the preloading for the next image, which shouldn’t have prevented you from viewing the current image.

Anyway, if it happens again, try reloading the page and see if that helps.  And let me know if/when it happens.