Ok, here we go then...

And thanks for the quick replies.


What version of Zen Cart are you using?

1.5.4

Has your site been upgraded? When? From what version(s)?

1.3x (?) not sure.

If you've upgraded, HOW did you upgrade? (official upgrade procedure or an automated script from your hosting company?)

I installed ZC then loaded the old database and ran the update script.

What plugins/addons have you installed? When? If your problems are payment-related, what payment module(s) are you using? If it's shipping-related, which shipping module(s) are you using?

No addons or modules. just a very simple template.

HOW did you install Zen Cart? (upload via FTP and run zc_install

yes


What version of PHP and MySQL is your server using? (See Admin->Tools->Server Info)

Server Host: sentora.dynamite.net.nz (103.16.181.36)
Database Host: localhost (103.16.181.36)
Server OS: Linux 3.12.27-xenU
Database: MySQL 5.5.44-0ubuntu0.14.04.1
Server Date: 09/28/2015 13:01:58
Database Date: 09/28/2015 13:01:58
Server Up Time: 13:01:58 up 31 days, 16:42, 0 users, load average: 1.50, 1.49, 1.54
HTTP Server: Apache
PHP Version: 5.5.9-1ubuntu4.12 (Zend: 2.5.0)
PHP Memory Limit: 128M PHP Safe Mode: Off
PHP File Uploads: On
Max Size: 50M POST Max Size: 50M
Database Data Size: 1,487 kB
Database Index Size: 736 kB




WHEN did the problem "start"?
As soon as I tried updating users. A development version of the site on a local Linux machine has no problems.

Please post the contents of related "debug logs" generated by Zen Cart (wrap the content in

Code:
[27-Sep-2015 10:54:37 Pacific/Auckland] PHP Warning:  file_exists(): open_basedir restriction in effect. File(/home/ianschof/public_html/new_shop/cache) is not within the allowed path(s): (/var/sentora/hostdata/riobravo/public_html/schofield:/var/sentora/temp/) in /var/sentora/hostdata/riobravo/public_html/schofield/mgmnt/includes/init_includes/init_cache_key_check.php on line 15

[27-Sep-2015 10:54:13 Pacific/Auckland] PHP Warning:  session_save_path(): open_basedir restriction in effect. File(/home/ianschof/public_html/new_shop/cache) is not within the allowed path(s): (/var/sentora/hostdata/riobravo/public_html/schofield:/var/sentora/temp/) in /var/sentora/hostdata/riobravo/public_html/schofield/includes/functions/sessions.php on line 155

[27-Sep-2015 10:54:12 Pacific/Auckland] PHP Warning:  session_save_path(): open_basedir restriction in effect. File(/home/ianschof/public_html/new_shop/cache) is not within the allowed path(s): (/var/sentora/hostdata/riobravo/public_html/schofield:/var/sentora/temp/) in /var/sentora/hostdata/riobravo/public_html/schofield/includes/functions/sessions.php on line 155