Upgrading from 2.3 to 2.5 fails with
[Fri Apr 11 13:35:56 2008] [error] [client 217.159.160.100] Premature end of script headers: upgrade.php
triggering 500 from server.
Upgrading from 2.3 to 2.5 fails with
[Fri Apr 11 13:35:56 2008] [error] [client 217.159.160.100] Premature end of script headers: upgrade.php
triggering 500 from server.
Adding
ini_set("zend.ze1_compatibility_mode",0);
to the wp-config.php fixed the issue.
More: Upgrading to WordPress 2.5.
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