I'm getting the error "Fatal error: Class 'OGraphr_Admin_Core' not found in /home/user/public_html/wp-content/plugins/meta-ographr/meta-ographr_admin.php on line 20" when I try to activate the plugin.
I've tried installing both automatically and manually. I'm logged in as admin, not in debug mode, and PHP version is 5.3.22.
Do you have any ideas what would be causing this? Anywould be much appreciated, as this looks like a very useful plugin!