I have just upgraded my installation from WP2.3.3 to WP2.5 for the second time. I am facing a strange problem - my dashboard homepage is not accessible. I have already done two fresh upgrade installations, but this problem still persists. When I login from the admin page, I get this error:
The error that I am getting is:
Fatal error: Call to undefined function: wp_register_sidebar_widget() in /home/XXXX/blog.gagankaul.com/wp-admin/includes/dashboard.php on line 31
I am able to access the dashboard by logging in and then going to a particular post on my blog and clicking on the edit post option. However, I cannot reach the Dashboard directly from the login page. Also, all other options are working fine. But when I click on Dashboard link from my administration panel, it shows the same error.
Has anyone faced similar situation? I have searched the site but could not find anyone talking about this error. Maybe I am doing something wrong. Please help!