gemmarmoll

Here comes the solution for wordpress 4.x, at wp_settings.php place this line to unable the memory limit

ini_set('memory_limit', '-1');

after this line that initializes the memoru constants

// Set initial default constants including WP_MEMORY_LIMIT, WP_MAX_MEMORY_LIMIT, WP_DEBUG, WP_CONTENT_DIR and WP_CACHE.
wp_initial_constants();

// place here!!
ini_set('memory_limit', '-1');

good luck!