It looks like the plugin Role Scoper might be causing an issue. Try deactivating it to see if the problem goes away. If it does, you might want to either check out the Role Scoper plugin documentation and then post the issue in the Role Scoper Support Forum.
The Role Scoper plugin is definately the cause – but this is not code, that’s warnings about the plugins code not being set up correctly. There’s two way around this. First, get the plugins author to fix it all, and this is probably going to be very hard to do. Most authors are great, but they still work as volunteers and don’t get paid for this so their time is given when they can afford to give it. The second (and eaiser) way that you should be able to fix this is for you to look at youw wp-config.php file and see what is set for define('WP_DEBUG', false);. The value should be false so if it’s true, change it to `false and you won’t see those warning messages.
