I can’t use “Block Not Selected” if I’m working with custom post types – as these are always edited with a URL similar to “wp-admin/post.php?post=nn&action=edit’. Is that correct?
No, in general, it’s possible to use “block not selected” option with custom post types. I suppose, that a possible source of a problem in your case is that the link like ‘wp-admin/post.php?post=nn&action=edit’ would be associated with one of the existed (but not selected and thus blocked) admin menu item, created by a theme or plugin. URE does not block any link except selected, just not selected links included into admin menu should be blocked.
Try to look for similar URL at the list of URLs shown at the dialog window when you click ‘Admin menu’ for the role. Is there such URL? To what plugin does it belong?
