Can you provide a link to your site so we can see what’s going on? Also, by default The Erudite only shows an excerpt. If I understand what you’re asking this means you turned off that functionality in the theme settings: Appearance –> Theme Options –> and you checked Disable ‘Keep Reading’. Just removed the check mark and you’ll get that functionality back.
Personally I have found that this particular bit of javascript screws with the formatting when using certain typefaces under certain browsers so I’ve disabled it. Instead I use the “more” function. In your blog post when you’ve reached the point that you would like to be the extract just hit the “More” button and it’ll insert an instruction. Now visitors to the front page will see the excerpt with a link at the bottom that says “Read More” which will take them to the entire blog post.
Hopefully an answer you’re looking for is somewhere in all this.