Joomla - JFolder::create: Could not create directory

When running Joomla 2.5 you may observe the following error :

JFolder::create: Could not create directory

Solution

This error is typically related to permissions. To resolve the issue run the following commands (replacing the path with the path of your Joomla installation).

cd /var/www/html/joomla-site
find . -type f -exec chmod 644 {} \;
find  . -type d -exec chmod 755 {} \;
chmod 777 cache