Hello people hopefully in the know,
For some unknown reason one of my galleries has stopped working....well I say stopped working I mean most of the small image previews are broken. You can still click on the link and bring up the full sized images. I've tried clearing the cache and then recreating them but all I get is:

Warning: unlink(/home/xxxxx/public_html/gallery/cache/seascape/xxxxxxx.jpg_550.jpg) [function.unlink]: Permission denied in /home/xxxxxxx/public_html/gallery/zp-core/class-gallery.php on line 623

For some reason I don't get the same issue with other galleries. I am also able to recreate the preview images and clear the cache. Any ideas? The same happens in the backend.

take a look:
http://tinyurl.com/oxofsd

Thanks in advance

Please check the permissions on the folder and review the troubleshooting guide.

Thanks Acrylian, the gallery came good on its own stupid thing...no idea why. I guess it was a permissions thing.