hello,
i've installed the nightbuild version on my site (under zenphoto-trunck repertory)

during and after installing, i have a lot of warnings :

Warning: file_exists() [function.file-exists]: open_basedir restriction in effect. File(/zenphoto_trunck/plugins/alt/lib-auth.php) is not within the allowed path(s): (/mnt/122/free.fr/4/9/vincent.bourganel) in /mnt/122/free.fr/4/9/vincent.bourganel/zenphoto_trunck/zp-core/auth_zp.php on line 10

Warning: session_start() [function.session-start]: Cannot send session cookie - headers already sent by (output started at /mnt/122/free.fr/4/9/vincent.bourganel/zenphoto_trunck/zp-core/auth_zp.php:10) in /mnt/122/free.fr/4/9/vincent.bourganel/zenphoto_trunck/zp-core/admin-globals.php on line 15

Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at /mnt/122/free.fr/4/9/vincent.bourganel/zenphoto_trunck/zp-core/auth_zp.php:10) in /mnt/122/free.fr/4/9/vincent.bourganel/zenphoto_trunck/zp-core/admin-globals.php on line 15

Warning: Cannot modify header information - headers already sent by (output started at /mnt/122/free.fr/4/9/vincent.bourganel/zenphoto_trunck/zp-core/auth_zp.php:10) in /mnt/122/free.fr/4/9/vincent.bourganel/zenphoto_trunck/zp-core/admin-functions.php on line 77

Warning: Cannot modify header information - headers already sent by (output started at /mnt/122/free.fr/4/9/vincent.bourganel/zenphoto_trunck/zp-core/auth_zp.php:10) in /mnt/122/free.fr/4/9/vincent.bourganel/zenphoto_trunck/zp-core/admin-functions.php on line 78

with this warnings :
i can't save administrator data (admin pages are always accessibles...)
i don't have option tab in admin pages.

what's the problem with my install and could you help me to solve it ?

That's surely the permissions of the files/folders. You might need to set them manually via FTP.

I am with the french ISP Free.
I can't modify permissions of files and folders.
they are currently set to 700 (folder) and 644 (files).

i have another folder with zenphoto 1.2.9 (official build) with the same permissions and i have no warnings.

what can i do ?

If you have access to change the open_basedir variable (either via SSH or php.ini), you should add the necessary paths to get rid of the error. Otherwise, you will need to contact your provider to change open_basedir.

"If you have access to change the open_basedir variable (either via SSH or php.ini), you should add the necessary paths to get rid of the error".

can you explain what should i do ?

why did not i had those problems with my older install of zenphoto ?

i saw this ticket on bugtracker : http://www.zenphoto.org/trac/ticket/1431

with setup.php, i've the following warnings :
`
Warning: file_exists() [function.file-exists]: open_basedir restriction in effect. File(/zenphoto_trunck/plugins/alt/lib-auth.php) is not within the allowed path(s): (/mnt/122/free.fr/4/9/vincent.bourganel) in /mnt/122/free.fr/4/9/vincent.bourganel/zenphoto_trunck/zp-core/auth_zp.php on line 10

Warning: Cannot modify header information - headers already sent by (output started at /mnt/122/free.fr/4/9/vincent.bourganel/zenphoto_trunck/zp-core/auth_zp.php:10) in /mnt/122/free.fr/4/9/vincent.bourganel/zenphoto_trunck/zp-core/setup.php on line 271
`
when i have a look on auth_zp.php, the line 10 is concerned by this ticket and i can't create the admin user...

could you help me ?

That ticket is actually about an extra and should not affect the normal installation. Anyway the nightly/trunk is a work in progress and may of course not work completly. You may need to stick to the official 1.2.9 release for now.