I'm using a brand spanking new install of 3.8.1 and new database. Hosting on media temple.
The only plugin I've installed and activated is woocommerce 2.1.1. It seems to work at first, but after going to settings pages I'm randomly getting redirected to the error page that says 'You do not have sufficient permissions to access this page.' So I deactivate and re-activate woocommerce 2.1.1 and again, it seems to be working and after clicking around in settings I get redirected to error page 'You do not have sufficient permissions to access this page.'
To reiterate, woocommerce 2.1.1 is broken and not working on a brand new install of 3.8.1. Any ideas?