I looked at the paths for the images and everything looks right to me so it’s not an issue with the theme having trouble figuring out where the images are. That happens sometimes with server settings using virtual paths, but it’s rare.
I am having trouble directly accessing the timthumb.php script at this URL: http://mediato.co.uk/wp-content/themes/parallelus-traject/includes/timthumb.php
It’s possible that your hosting company has enabled security that is conflicting with the script. That would not be unheard of. Timthumb has a pretty bad reputation for security issue, although they’ve always been quick to fix and update any problems. The reason hosts don’t like it is because it was so widely used when the first vulnerability was found and a lot of people didn’t know (or didn’t want) to update it to fix the issues. In a way timthumb is being looked down on for it’s popularity. 
Check with your host and ask if they can determine why the script stopped working. If they did enable some additional security they should know exactly what’s going on and how to fix it. Let us know what you hear back and if there is anything we need to do. Thanks!
