After installing The7 theme I decided to use Revolution Slider as my main slider plugin. But it was impossible to change any settings or even activate my plugin: buttons were non-clickable.
In Firebug I found these errors:
JQMIGRATE: Migrate is installed, version 1.4.1
load-sc…r=4.5.3 (line 9)
ReferenceError: wp is not defined
UniteLayersRev.setGlobalAction(wp.template( "rs-action-layer-wrap" ));
edit_la…184.108.40.206 (line 22)
I tried almost everything. I deactivated all my plugins, check the Slider after switching to a standard WP theme (TwentyFifteen), database optimization etc.
But it was found that the problem is not on my side. It was a bug in Revolution Slider 220.127.116.11.
To fix it just write a ticket to the support team (http://support.dream-theme.com/tickets) with your FTP credentials, wp-admin login&password. Hope they fix your problem too.
Revolution Slider 5.2.6 is OK.