Increasing the WordPress Memory Limit

  1. Edit your wp-config.php file and enter something like:

    define('WP_MEMORY_LIMIT', '128M');
    

WordPress memory can be different to the server – you need to set this regardless of server memory settings

http://codex.wordpress.org/Editing_wp-config.php#Increasing_memory_allocated_to_PHP

  1. If you have access to your PHP.ini file, change the line in PHP.ini

If your line shows 32M try 128M:

    memory_limit = 128M ; Maximum amount of memory a script may consume (128MB)
  1. If you don’t have access to PHP.ini try adding this to an .htaccess file:

    php_value memory_limit 128M
    
  2. If none of the above works then talk to your host support.