Increase PHP's memory limit, e.g. to increase it to 32M you could try adding:
memory_limit = 32M to your server's main php.ini file (recommended, if you have access)
php_value memory_limit 32M in your .htaccess file in the Oxwall root
some shared hosts will not allow any modification of your capacity at all
Increase PHP memory limitIncrease PHP's memory limit, e.g. to increase it to 32M you could try adding:
memory_limit = 32M to your server's main php.ini file (recommended, if you have access)
php_value memory_limit 32M in your .htaccess file in the Oxwall root
some shared hosts will not allow any modification of your capacity at all