title: cross-domain policy error in Silverlight with WCF
body: <p>I'm getting the following error when I connect my Silverlight app to my WCF service. I host this wcf as a self host service.</p>
  
  <blockquote>
    <p>An error occurred while trying to make a request to URI '<a href="http://lmr-hero/iSponsorWebSite/projectService.svc/basic" rel="nofollow noreferrer">http://lmr-hero/iSponsorWebSite/projectService.svc/basic</a>'. This could be due to attempting to access a service in a cross-domain way without a proper cross-domain policy in place, or a policy that is unsuitable for SOAP services. You may need to contact the owner of the service to publish a cross-domain policy file and to ensure it allows SOAP-related HTTP headers to be sent. This error may also be caused by using internal types in the web service proxy without using the InternalsVisibleToAttribute attribute. Please see the inner exception for more details.</p>
  </blockquote>
  
  <p>What are the possible reasons for this error?</p>