Some people who are trying to search PDF files by content with TemplateToaster theme have a problem with displaying files in search results. Simply say, files didn't show.
Well, the reason is that TemplateToaster authors added their own additional WP_Query() request in the
search.php template file. This request has custom parameters and thus WPFTS Pro functionality becomes disabled.
What we should do is to comment out line 14 in the
search.php which removes that additional request and so normal WP search (empowered with WPFTS Pro functionality!) becomes working normally.
It was a simple trick, right? Hope it helps!