Errors in system.log Warning: session_start() [function.session-start]: open(/htdocs/var/session/sess_3gik5vasun8ac8hevs16f7g581, O_RDWR) failed: Permission denied (13)
Says: Please give rights to write in var/
You should reset the permissions for all the files
Here’s how to reset your file and directory permissions if PHP is running through FastCGI, suPHP, or LSAPI:
find . -type f -exec chmod 644 {} \;
find . -type d -exec chmod 755 {} \;
chmod 550 pear
chmod 550 mage #for magento 1.5+
If PHP is running as a module (DSO), you will need to do this:
#for magento 1.5+
find . -type f -exec chmod 644 {} \;
find . -type d -exec chmod 755 {} \;
chmod o+w var var/.htaccess app/etc
chmod 550 mage
chmod -R o+w media
Only the 3rd party extensions aren't loading.
Errors in system.log
Warning: session_start() [function.session-start]: open(/htdocs/var/session/sess_3gik5vasun8ac8hevs16f7g581, O_RDWR) failed: Permission denied (13) in htdocs/app/code/core/Mage/Core/Model/Session/Abstract/Varien.php on line 123
User Notice: Sorry, your PCRE extension does not support UTF8 which is needed for the I18N core in /lib/Zend/Locale/Format.php on line 769
– mik_traff Mar 12 '14 at 23:49