Hi James,
One of the images isn't showing up because the link is missing an [ before the closing [/image]

You have:
... kitten_14.jpg/image]

My image (Cubie with ball) is one of the red x's. ;-(
Looking at the link it seems different from the links for the others. Both the red x links have the character # in them, while none of the other, showing links do. Could the link be mistyped?