troubleshooting Question

Clean install of Wordpress has errors on admin login

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AMPLECOMPUTERS asked on
PHPApache Web ServerWordPress
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I have a server which has a couple of wordpress installations, one on one domain which works fine (it is a client's so I don't have access to its admin console) and one which does not work correctly (another client, but I do have access to this one).

If you remove all traces of WP from the domain on the server, download the latest version, unzip it, upload it, create the MySQL database and user, run the config, then I get an error that it could not write the config file and tells me to copy and paste which I do without a problem, upload the config file, then log into the admin part of the new empty site I get these three errors at the top of the screen:

Warning: preg_match_all(): Compilation failed: unknown option bit(s) set at offset -1 in /home/safadm/public_html/wp-includes/compat.php on line 30

Warning: array_slice() expects parameter 1 to be array, null given in /home/safadm/public_html/wp-includes/compat.php on line 31

Warning: implode(): Invalid arguments passed in /home/safadm/public_html/wp-includes/compat.php on line 32

I also get errors under the different sections of the dashboard such as under Plugins I get this:

Warning: preg_match(): Compilation failed: unknown option bit(s) set at offset -1 in /home/safadm/public_html/wp-includes/SimplePie/Misc.php on line 1926

Warning: preg_match(): Compilation failed: unknown option bit(s) set at offset -1 in /home/safadm/public_html/wp-includes/SimplePie/Misc.php on line 1926

Warning: preg_match(): Compilation failed: unknown option bit(s) set at offset -1 in /home/safadm/public_html/wp-includes/SimplePie/Misc.php on line 1926

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Warning: preg_match(): Compilation failed: unknown option bit(s) set at offset -1 in /home/safadm/public_html/wp-includes/SimplePie/Misc.php on line 1926

Warning: preg_match(): Compilation failed: unknown option bit(s) set at offset -1 in /home/safadm/public_html/wp-includes/SimplePie/Misc.php on line 1926

Warning: preg_match(): Compilation failed: unknown option bit(s) set at offset -1 in /home/safadm/public_html/wp-includes/SimplePie/Misc.php on line 1926

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virtually identical errors appear under the "WordPress Blog" and "Other WordPress News" sections as well.

I have called the people we lease the server from and they first suggested an update to PHP and Apache rebuild (PHP was 5.3.?, now is 5.4.?) and this had no effect. The server is running CentOS 5.9, WHM 11.34.1 (build 12) and Apache 2.0.64.

I found another possible solution to do with pcre so I ran:

sudo yum upgrade '*php*' pcre

followed by restarting the Apache service, no change. I then rebooted the server just to be sure, no change.
ASKER CERTIFIED SOLUTION
AMPLECOMPUTERS

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