I've noticed some images are broken in trades. For example, Angel Trumpet Seeds looks just fine when I view them in my inventory, but on the Trades page, they just show up as the broken image icon. (I have a trade up with some here so you can see: http://www.rescreatu.com/trades/usertrades/rainofstars).
This also happens with a lot of the Hatching squishies.

Is there something wrong with my computer that I can fix or is this a bug on the site?

There's nothing wrong with your computer, looks like the image link referenced in the trades area is wrong for whatever reason. I do believe this is already on the list of things to be fixed though. =)

Ok thanks :)