[Plugin: Posts 2 Posts] Admin Column for Reciprocal Connection

When I try to display an admin column for a reciprocal connection, an error is thrown:

Notice: Undefined index: any in C:\wamp\www\test-site\wp-content\plugins\posts-to-posts\admin\column.php on line 48

Fatal error: Call to a member function item_title() on a non-object in C:\wamp\www\test-site\wp-content\plugins\posts-to-posts\admin\column.php on line 61

Below is the code I use to register the connection type:

p2p_register_connection_type( array(
        'name' => 'spouses',
        'from' => 'constituent',
        'to' => 'constituent',
        'reciprocal' => true,
        'cardinality' => 'one-to-one',
        'title' => 'Spouse',
        'admin_column' => 'any',
        'admin_box' => array(
              'show' => 'any',
              'context' => 'normal'
        )
) );

http://ww.wp.xz.cn/extend/plugins/posts-to-posts/