Looks like with ImageShack going to a premium model that images that were hosted when they were free have started to go offline – TEP&Co. theme has been heavily effected by this and will be down for to correct the missing images. I have checked my ImageShack account and the images are all available.
If you know of or are using any images from ImageShack (N/A for anyone that may have a paid subscription) on the forum please make backups and host them elsewhere.