It also shows this:

Found 3 Results yes yes yes yes

Is that an error also?

I suspect that the inline javascript (js that is in the page itself) is breaking our plugin, as you guessed.

I took a quick look at the js it refers to:

<!-- bxSlider Javascript file -->
<script>
  $(document).ready(function(){
    // code highlighter
    hljs.initHighlightingOnLoad();
  });
</script>

It would be more normal in WordPress for this to look like this:

<!-- bxSlider Javascript file -->
<script>
  jQuery(document).ready(function(){
    // code highlighter
    hljs.initHighlightingOnLoad();
  });
</script>

However, the reference to bxSlider should give a strong hint as to what might be causing it,

This is bxSlider:

http://bxslider.com/

Hi

To avoid any possibility of bugs that have been fixed, can you update Search & Filter to the latest version? If you need to do a manual update:

Download the new version from your account area), then follow these manual installation instructions:

1) Deactivate S&F in WP Admin Plugins page (do not delete, otherwise you may lose your search forms IF the current version you have installed is older than 2.3.1 – from that version onward we have fixed this issue with a setting in the main plugin settings page)
2) Via FTP, delete search-filter-pro folder from the wp-content\plugins folder on your server. If you wish to keep the folder, just in case, do NOT rename it, instead move it UP a folder into the wp-content folder.
3) Unzip the file that you have downloaded.
4) Upload the search-filter-pro folder from the archive file you just unzipped to the wp-content\plugins folder on your server.

Please note that the release of v2.3.3 is imminent.