In case your WP installation throws errors like:

Fatal error: Allowed memory size of xxxxxxxx bytes exhausted (tried to allocate xxxx bytes)

it means that your WordPress simply needs more memory. Nowadays our servers have 128M memory_limit set by default. But some scripts with different plugins may need more, thus, the error above may take place. In order to fix it and increase limit to 180M simply add the following line to the wp-config.php file:

define('WP_MEMORY_LIMIT', '180M');

Please, note, that it will increase memory_limit for WP only. If you would like to increase memory_limit for all scripts inside your account, you need to create custom php.ini file with the code:

memory_limit = 180M
upload_max_filesize = 180M
post_max_size = 180M

After that, make sure that settings in your php.ini are applied for your account globally.
You can find out how to do it at Load php.ini recursively for all subfolders