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If possible, increase the memory limit in either php.ini, .htaccess, or in the wp-config.php file.

In php.ini
`memory_limit = 128M ; Maximum amount of memory a script may consume (128MB)`
Follow the proper procedures for restarting apache, etc.

.htaccess method
This is in my .htaccess because of file upload limitations in the php.ini as well as memory limits (I use many many plugins).
`php_value memory_limit 256M
php_value upload_max_filesize 55M
php_value post_max_size 55M
php_value max_execution_time 80000
php_value max_input_time 80000`

In wp-config.php
`define(‘WP_MEMORY_LIMIT’, ‘128M’);`