meiraputerman on "[Plugin: WordPress SEO by Yoast] Error: Undefined property when setting default landing page to be static page"

WordPress version: 3.5.1
WordPress SEO version: 1.4.6

When I set the default landing page to be a static page via Settings > Reading, then I get the following error message at the top of the page:

Notice: Undefined property: stdClass::$post_type in /usr/www/users/philippa/staging/wp-content/plugins/wordpress-seo/frontend/class-frontend.php on line 141

When I set the "Front page displays" to be latest posts, then the error message disappears.

Please help!

Thanks

http://wordpress.org/extend/plugins/wordpress-seo/