adding image to product not working

-- url of the page with the problem -- : edencrestfarms.com/dev/
-- HikaShop version -- : 2.3.3
-- Joomla version -- : 3.3.4
-- PHP version -- : 5.3.28
-- Browser(s) name and version -- : Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/37.0.2062.124 Safari/537.36
-- Error-message(debug-mod must be tuned on) -- : Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 18432 bytes) in /home/edencres/public_html/dev/administrator/components/com_hikashop/helpers/image.php on line 819

I clicked on add after selecting a product and get a blank page, turning on error reporting yielded the above noted error message.