( ! ) Catchable fatal error: Object of class WP_Error could not be converted to string in /home/users/1/yakuji/web/yakujijp090910/wp-includes/revision.php on line 67
Call Stack
#	Time	Memory	Function	Location
1	0.0001	220168	{main}( )	.../index.php:0
2	0.0002	223000	require( '/home/users/1/yakuji/web/yakujijp090910/wp-blog-header.php' )	.../index.php:17
3	0.0003	239960	require_once( '/home/users/1/yakuji/web/yakujijp090910/wp-load.php' )	.../wp-blog-header.php:12
4	0.0004	247912	require_once( '/home/users/1/yakuji/web/yakujijp090910/wp-config.php' )	.../wp-load.php:37
5	0.0009	349688	require_once( '/home/users/1/yakuji/web/yakujijp090910/wp-settings.php' )	.../wp-config.php:83
6	0.1757	28851624	do_action( )	.../wp-settings.php:392
7	0.1865	29223272	call_user_func_array:{/home/users/1/yakuji/web/yakujijp090910/wp-includes/plugin.php:525} ( )	.../plugin.php:525
8	0.1865	29223352	FeedWordPress->auto_update( )	.../plugin.php:525
9	0.1872	29252896	FeedWordPress->update( )	.../feedwordpress.php:1835
10	5.1301	31013928	SyndicatedLink->poll( )	.../feedwordpress.php:1148
11	7.3531	32170312	SyndicatedPost->store( )	.../syndicatedlink.class.php:280
12	7.5374	32230336	SyndicatedPost->insert_post( )	.../syndicatedpost.class.php:1686
13	7.6289	32290784	_wp_put_post_revision( )	.../syndicatedpost.class.php:1796
14	7.6289	32290872	_wp_post_revision_fields( )	.../revision.php:270