Error message when try to enter discription

[PhotoFan]

Hi,

One of my members on the gallery gets an error message when he trys to discribe his pictures.
First it was "error There could be no valid form token found."

And now he gets this message "critical error Script called without the required parameters."

He's the only member that's experience this and I have no idea what could be the problem.

Gallery = http://www.whats-hot-nl.com

Regards, Paul

[Αndré]

Enable debug mode for everyone and ask the user for the extended error message, if it happens again. Additionally, does he use the "edit one pic" or the "edit multiple pics" form?