I've set up a gallery which shows thumbnails and on click displays a large image. This has been working fine but now some of the images are showing a missing icon for the large although the thumbnail is there. Looking at firebug, code below, the images appear to be coming from the same place and the images are on the server so what could be causing the missing image?
Here is a working image
<a href="/assets/components/gallery/connector.php?action=web/phpthumb&w=0&h=0&zc=0&far=&q=90&src=%2Fassets%2Fgallery%2F7%2F42.JPG">
<img class="" alt="Cranbrook, Kent" src="/assets/components/gallery/connector.php?action=web/phpthumb&w=0&h=0&zc=0&far=&q=90&src=%2Fassets%2Fgallery%2F7%2F42.JPG">
</a>
Here is a not working image
<a href="/assets/components/gallery/connector.php?action=web/phpthumb&w=0&h=0&zc=0&far=&q=90&src=%2Fassets%2Fgallery%2F7%2F44.JPG">
<img class="" alt="Dallington, East Sussex" src="/assets/components/gallery/connector.php?action=web/phpthumb&w=0&h=0&zc=0&far=&q=90&src=%2Fassets%2Fgallery%2F7%2F44.JPG">
</a>