White page when "save changes"

Hi,

Can you please turn on debugging and see what error is appear and let us know.

Thanks

Sorry to be so long to answer but I was in holiday…

Here is the debug message :

in wp-includes/functions.php on line 3508 Fatal error: Call to a member function remove_cap() on a non-object in wp-content/plugins/white-label-cms/wlcms-plugin.php on line 814

Thanks for your help !

This problem appear because you probably removed role “editor”, if yes you will need to add additional validation “if role exists” in all cases where the statement $role = get_role(‘editor’) appears.
f.e.

if ($_REQUEST['wlcms_o_editor_template_access'] == "1") {
        $role = get_role('editor');
        if ($role) {
            $role->add_cap('edit_theme_options');
        }
    } elseif ($_REQUEST['wlcms_o_editor_template_access'] == "0") {
        $role = get_role('editor');
        if ($role) {
            $role->remove_cap('switch_themes'); // Legacy
            $role->remove_cap('edit_themes'); // Legacy
            $role->remove_cap('edit_theme_options');
        }
    }

Exact, I’ve removed the editor role.
Where do I have to add the code you gave up ?

Thanks