[Theme: Responsive] Broken Links

Hey all – I’m extremely new to wordpress and I’m setting up a site with the Responsive theme. My friend originally installed wordpress twice and made it so the root (home page) was un-editable. To solve this I deleted the other install of wordpress and moved all the files on the current site to the root domain.

So while fixing the problem with the home page, I ended up breaking parts of my site. My guess is from the incorrect transfer of files to folders?
I’m getting this error message:
“Fatal error: Call to undefined function responsive_free_get_option() in /home/content/19/11408719/html/wp-content/themes/responsive/home.php on line 31”

Someone has recommended I use Find and Replace and replace all instances of the old site – unfortunately, I couldn’t find an instance of the old site (maybe I interpreted this wrong?).
Here’s the site:
http://bentunitrecords.com/

Here’s the broken page:
http://bentunitrecords.com/?page_id=41
Please respond in as lament’s terms as possible, as I don’t know what you may mean.
Thank you.

[Moderator Note: No bumping. If it’s that urgent, consider hiring someone.]