I’ve fixed a few bugs in the Robots Meta plugin which might have caused the disabling of certain pages not to work, due to the fact that I was a sloppy in whether certain variables were in scope or not. Also certain stuff was deprecated or it’s functionality has changed within WordPress since the inception of this plugin, so I had to change it.
In the process I’ve also added another option, which takes a bit more explanation: sometimes, people will link to your search results (like to Matt, for instance). I wanted to make this impossible on my sites, without disabling the search function. So know if you search on this site, you’ll get your normal search results. If you search without a referrer from this blog though, you will be 301 redirected to the homepage.
In all, this was a badly needed update, so please upgrade to 2.9.1 ASAP. You can download it here.