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