I have published the error log here http://franklinart.co.uk/error-log-zenphoto.html
They have already disabled php safe mode at my request (on 2009-05-29)
AHA! I think I may have it - the images in the albums permissions were 644 I changed them to 777 and I could move them.
What should the permissions on the images actually be?
Thank you for your help with this.