Javascript errors from Google Adsense

Question

On several of my adsense running sites, I have been getting the following errors:

Unable to post message to [http://]googleads.g.doubleclick.n

Answer 1

A crossdomain.xml file in the site root allowing access to googleads.g.doubleclick.net should fix it.

See this page, http://www.warriorforum.com/adsense-ppc-seo-discussion-forum/458906-adsense-blank-space-problem.html

Answer 2

It's normal because your browser prevents CSRF attacks from other websites.

To allow googleads... to access your website and solve this problem, create a file named crossdomain.xml in your webroot and fill it with the following content:

<?xml version="1.0"?>
<!DOCTYPE cross-domain-policy 
  SYSTEM "http://www.macromedia.com/xml/dtds/cross-domain-policy.dtd">
<cross-domain-policy>
  <allow-access-from domain="googleads.g.doubleclick.net" />
</cross-domain-policy>

To test it, go to your domain http://your-domain.com/crossdomain.xml and make sure there are no errors for that page. You also allowed to use wildcards, etc (look at reference). When you're done, refresh your page. Hope that helps.

Live example: http://www.blanjamudah.com/crossdomain.xml

Reference: http://en.wikipedia.org/wiki/Cross-site_request_forgery http://curtismorley.com/2007/09/01/flash-flex-tutorial-how-to-create-a-crossdomainxml-file/

Answer 3

Simply moving <script type="text/javascript" src="http://pagead2.googlesyndication.com/pagead/show_ads.js"></script> to the top of the page above the ads, instead of below, fixed this for me