Broken images in Catch Everest Pro

While working on the site all my images disappeared apart from those in a NextGEN gallery. 3 of the images in the front page slider reappeared by themselves, and I tried re-adding the last two, but they just won't show up. Then the first image of three in the featured content reappeared, but numbers 2 and 3 persist in showing the broken image icon, despite me inspecting the source and clearly seeing the link present. I've tried re-attaching them to no avail. Please can you help? http://www.kingholidaycottages.co.uk