How to fix Wordpress issue "Fatal error: Allowed memory size of 33554432 bytes exhausted"

Programming, error messages and sample code > PHP
The WP_MEMORY_LIMIT option allows you to specify the maximum amount of memory that can be consumed by PHP. This setting may be necessary in the event you receive a message such as "Allowed memory size of xxxxxx bytes exhausted".

Try adding this line to your wp-config.php file:
define('WP_MEMORY_LIMIT', '64M');