I started setting up my blog yesterday. After choosing a theme, I wasn't able to apply it to my blog and since then I'm getting the following error message when I try to go to my login page.
Fatal error: Class 'WP_Widget' not found in /home/kata/public_html/wp-content/themes/graphene.1.2.1/graphene/functions.php on line 722
It has been like this since last night.
Could anyone please help how to solve this?