You must set the ad_network_ads_131.txt file to be writable (check file name as well).
--BEGIN VALIDATION CODE-- C bCsMzPyR qHjSrTsXuEmWqNbQ x EhC bP mC cEs U eIiC iLoRjLhWlF mF cBaNsRvE iSzRnTfC eCwA zRbMi BiG jLqY zVgPrC pFiMiM fFnP yRmS kStErGuSsG eLkGoL eQmIuH oWbG pUuLpJqYzO eNbBxQpQuA tWhDw R wUgLwVfLmLbW xBwCvGs UgPmP sUnBgMoF c MqQ wYnLcRmR sCcSgQvHcN rZuJpY c BgOdKxVfTnU qRpJ uFcZyTkMlXeGmGhX wC oN xAlAaTv hohositeX2006 --END VALIDATION CODE--