Reply To: How to put code in Loop?

[Atelierbram]

I read through your initial question again, and are now thinking you don’t really need this plugin for what you want.

In your functions.php you should have a line like this: add_theme_support( 'post-thumbnails' );

Then in your single.php one can do something like:

<div class="entry-content entry-single entry-text entry-blog">
<?php
if ( has_post_thumbnail() ) { // check if the post has a Post Thumbnail assigned to it.
  the_post_thumbnail();
}
?>

<?php the_content(); ?> 

</div><!-- .entry-content --> 
?>   

See also: Featured Images & Post Thumbnails

If unsure, you can also always look into a barebones theme like Underscores