Hello Kevin,
I am running WordPress 3.0.4 and Role Scoper 1.3.22.
In a given page (and propagating to its sub-pages), let's call it page "A", I assigned a user "U" as an Editor. But after that it started getting server errors (I am not sure at which moment) every time I clicked on the Update button on that page. This is the error I get:
PHP Catchable fatal error: Object of class stdClass could not be converted to string in /[..]/wp-content/plugins/role-scoper/admin/filters-admin-save_rs.php on line 453
Also, if I login as the user "U", I only see the welcome message and the logout option, but no dashboard nor menus at the left.
I have tried uninstalling the plugin and clearing the database RS tables and records (wp_options and wp_postmeta), but I still get the same results over and over, like if the page "A" had somehow cached the preference forever. If I update any other page I get no server errors, but I cannot update the page "A" anymore, even if I don't touch the RS options (the only way to update the page is deactivating RS).
What could the problem be?
Thanks a lot for your support.