Can't get the security code to work

[Brainslug]

Script URL: http://fzf.ukim.edu.mk/testforms/gest/gbook.php
Version of script: 1.6
Hosting company:
URL of phpinfo.php: http://fzf.ukim.edu.mk/testforms/gest/phpinfo
URL of session_test.php: http://fzf.ukim.edu.mk/testforms/gest/session_test
What terms did you try when SEARCHING for a solution: I put the location code that sets the store directory to <script dir>/tmp, but to no avail. I either get some error code like http://fzf.ukim.edu.mk/testforms/gest/print_sec_img or when the image doesnt show and i put the same url i get the url of the image... I tried changing the permissions to the www-data user which is listed in the php info but still nothing.

Write your message below:

[Klemen]

Hi,

Ask your host to install/enable GD library; it's the library PHP needs to generate images.

[Brainslug]

thanks, its working now.