i tray to update and i have this probleme

Warning!Zenphoto attempts to make log files accessable by owner only (permissions = 0600). This attempt has failed. The log file permissions are 0644 which may allow unauthorized access.

what i should do.and any file i should give chmod

10x

You should manually set the permissions, use .htaccess to prevent access to the folder, or fix the problem that caused Zenphoto not to be able to set the permissions in the first place.

sorry but i don't know how to do it.
what i should put in htaccess?
sorry but realy i don't know

I presume you have a hosted service. Talk with your support people. Tell them that you need the Web applications to be able to change permissions on files that they have created.