title: validation page in prestashop is blank after confirm payment
body: <p>I have prestashop 1.6.0.9 running. All was well when suddenly after i wanted to test the order of a product, the last page validation, after confirming the order is blank. I used the modules bank wire and cash on delivery and with every module is returning the white page. I tried uninstalling this modules, delete them and then re-install but this didn't help. I wouldn't want to reinstall prestashop again and I wonder if there is a solution for this problem...</p>