Updates fail

Hi,

Sharepress worked fine for a while then stopped. I keep getting failures like:

Last Post Failed: Object at URL ‘http://www.mysite.com/2013/12/08/%ce%b6%ce%ae%cf%84%cf%89-%cf%84%ce%bf-%ce%b5%ce%bb%ce%bb%ce%b7%ce%bd%ce%b9%ce%ba%cf%8c-%cf%84%cf%81%ce%b1%ce%b3%ce%bf%cf%8d%ce%b4%ce%b9-08-12-2013/’ of type ‘article’ is invalid because it specifies multiple ‘og:url’ values: http://www.mysite.com/2013/12/08/%ce%b6%ce%ae%cf%84%cf%89-%cf%84%ce%bf-%ce%b5%ce%bb%ce%bb%ce%b7%ce%bd%ce%b9%ce%ba%cf%8c-%cf%84%cf%81%ce%b1%ce%b3%ce%bf%cf%8d%ce%b4%ce%b9-08-12-2013/, http://www.mysite.com/2013/12/08/%ce%b6%ce%ae%cf%84%cf%89-%cf%84%ce%bf-%ce%b5%ce%bb%ce%bb%ce%b7%ce%bd%ce%b9%ce%ba%cf%8c-%cf%84%cf%81%ce%b1%ce%b3%ce%bf%cf%8d%ce%b4%ce%b9-08-12-2013/.

Any idea how to fix this?

Secondly, when Sharepress fails to post the update, the above lengthy text appears in the Sharepress column on the All Posts page to alert me that the update wasn’t posted. I know the code is long because I use unicode characters, however, the fail message could be communicated without the entire url of the post. This creates huge gaps between posts and messes up the view of the whole page. It will only go if you try again and the update is successful but as I said, updates don’t work at the moment and so all my posts on the page now have huge gaps and all this unnecessary code. There is no setting in Screen options or on Sharepress’s settings to not display this column.

Can you please advise on how to resolve this as well?

Thank you

http://wordpress.org/plugins/sharepress/