Anybody? Remove all the ERROR pages from the Search Results?

Oops! That page can’t be found.

That’s what I get after activating “Smart Attachment Page Remove“, a ton of error pages coming up in the search results. I have a lot of media at my site, I don’t want it coming up in search results. I’ve looked at the main SEO plugins solely for the purpose of keeping media attachment pages out of search results; you either have to pay for the feature, or else the plugin didn’t work at my site, who knows why.

I wanted to try a manual method with a code snippet, but can’t find image.php in my Lifestylepress theme, it doesn’t seem to be there.

If I leave “Smart Attachment Page Remove” installed and activated, which removes attachment pages, HOW can I then stop these “non-existent” pages from showing up in search results? The better question might be, if the attachment pages don’t exist any more, why are they coming up in a search? But how can I get rid of them from my search results?

Thanks in advance.

The page I need help with: [log in to see the link]