By default, memory limits set by your host or by WordPress may be too low. This will lead to applications crashing as PHP reaches the artificial limit. You can adjust your memory limit within your <a href="%1$s" target="_blank">php.ini file</a>, or by contacting your host for assistance. You may also need to define a memory limited in <a href="%2$s" target=_blank">wp-config.php</a>.