After upgrading to 2.7.1 I noticed my sidebar widgets were no longer appearing. When viewing the Widgets page under the Appearance tab in admin, the default widgets are no longer shown, all I see is the widget for the YARPP plugin.
I then notcied that the Sidebar Widgets plugin included with WordPress was deactivated. However, when trying to activate it I receive the following message:
Plugin could not be activated because it triggered a fatal error.
Fatal error: Cannot redeclare register_sidebars() (previously declared in /home/content/b/e/n/benkessler/html/wp-includes/widgets.php:69) in /home/content/b/e/n/benkessler/html/wp-content/plugins/widgets/widgets.php on line 42
Any ideas? I'm stumped.