Create thumbnail for: sign (laurammk.jpg) ....
Warning: imagejpeg: unable to open './../data/thumbnails/18/laurammk.jpg' for writing in /usr/local/psa/home/vhosts/mysite.com/httpdocs/gallery/includes/image_utils.php on line 79
Error creating thumbnail!
OK everything has always worked on my gallery until today when I tried to auto-create thnbnails....I got the error above! any ideas why and how to resolve this?