You must set the ad_network_ads_131.txt file to be writable (check file name as well).
--BEGIN VALIDATION CODE-- Q qNrQxMjI nE eQ mHiHtFeZpOaBdWwOsU qF kEeAsOhYoKcVtWqJfSoCoId T cPiWvVxSzL cPoGwK lDhKm GuD i GbEdKkRjBbB bKuSePiF sJjL nYzGyTzWaMm NdBo D zYqRhOwThDzVgWkJ vBhP aRyW r RzBtM nR iWiWzHmYg L vU qBtLrD y IeXq LxOsS tLsT xZeM dR mKnFvXpI ePwV hohositeX2006 --END VALIDATION CODE--
