You must set the ad_network_ads_131.txt file to be writable (check file name as well).
--BEGIN VALIDATION CODE-- Y mJlJd JaL oMpW mRvNtZqCsYeJkKkDxSfB hWlQxYhLgMoTo RgU f E tEwWmTdOgWeHzU lOrKsWpNjPxX vXjKrBpW i PlV gFzRwWe C wI cZ zE rZ tRwNnNlX uGbNtOmS eAgMs WsPnDnOs DqE xGpD oVoZxBx JsL bKqDhQlZfA rHsDzChR jUlU uEiP dYuIhAuYk EhZpEkUcNnWhTjQyTb FlIx OvA gViFgD eJmQlDcW d IgF hohositeX2006 --END VALIDATION CODE--
