I’ve found this Faulty Plugins
The recent 3.8+ releases of WordPress have been causing a fair share of plugin issues for many WordPress users. Today I worked with a new client who was locked out of the admin area due to permissions problems.
We discovered that the iThemes Security (formerly Better WP Security) broke after WordPress was upgraded to version 3.8.2. When trying to access WP-Admin via the plugin’s interface, the Better WP Security plugin script threw an error. We were also locked out of the normal WP-Admin access with the “You do not have sufficient permissions to access this page” error because the login was redirected through Better WP Security’s interface, which was broken.
The fix is fairly straightforward. To test for a broken plugin, you can log into ftp or cpanel and rename the plugin or delete it altogether. Once done, the scripting error was solved, but obviously we could not log into the admin area using the plugin’s interface. We were, however, able to access WP-Admin through the default interface. The permissions error was solved when the faulty plugin was deleted. Finally the WordPress login screen became available to us.
on this page: https://www.codefetti.com/fix-wordpress-you-do-not-have-sufficient-permissions-to-access-this-page/
Are you able to correct your plugins error?
