Hi, I have uploaded photos, however the thumbs and full screen images are only created once requested, so there are often missing images that appear broken before they are rendered...

Is there any way of forcing all images to be rendered without having to load every image in every album?

If they appear broken they are might be too large for your server to process properly.
http://www.zenphoto.org/news/problems-with-albums-and-images
http://www.zenphoto.org/news/caching

They do eventually get processed, just after a few refreshes are they all sorted, that's why I would like to force the cache so that I don't get this with the 100's of images...

Thanks for the second link which explains about the plugin! Much appreciated!