Fatal error: Cannot use object of type WP_Error as array

Try deactivating all plugins. If that resolves the issue, reactivate each one individually until you find the cause.

If that does not resolve the issue, try switching to the Default theme (WordPress 1.5 – 2.9.2) or the Twenty Ten theme (WordPress 3.0 and higher) to rule-out a theme-specific issue.

Hi, James
Thanks for your reply, i have deactivated sexy-bookmarks and its works, but i don’t know why old posts are displayed properly in presence of sexy-bookmark plug in, only some new posts are effected.

You’re welcome! I’m not sure why it was affecting only certain posts, but the problem was definitely the plugin.

I had same problem and found a way to fix it so I can keep sexybookmarks plugin active.
If you want to do same here is how:

[1]
Find file /wp-content/plugins/sexybookmarks/includes/helper-functions.php
– go to line #36 ($response = wp_remote_retrieve_response_code($request);)
– insert new line just before it: $response = (array)$response;

[2]
Find file /wp-content/plugins/sexybookmarks/includes/public.php
– go to line 19 ($url_request = wp_remote_request($url, $request_params);)
– change that line to this: $url_request = (array)wp_remote_request($url, $request_params);

As you can see its just matter of type casting.

So many thanks BorisO !!

Your solution is exactly what i needed !

I run on WordPress 2.7.1.

For me, in the Sexybookmarks.3.2.4.2 version, the [2] modification is not at line 19, but at line 272.

See ya !