After updating to CC 1.6 and WP 3.6 all've broken

Hello,

I updated CC plugin to 1.6 and Wordpress to 3.6. All new posts have no preview image (I've unselected option to get Featured image). I've deleted everything and activated plugin again - in a result, there was the same situation - no preview image. Referral link doesn't work. In CC threads I can't click on "Run now" - it doesn't work.

Can you help me please?

Thanks,
RH