Hi,
I responded to your email with the solution, but I’ll include my response here in case anyone else is having the same issue.
In this plugin, the featured images get removed with:
remove_action( 'genesis_entry_content', 'genesis_do_post_image', 8 );
remove_action( 'genesis_post_content', 'genesis_do_post_image' );
This works fine in most cases, as the featured image tends to be in the entry content or post content. However, in your theme, you’re relocating it to the entry header. There’s nothing wrong with that, just that my plugin didn’t account for that.
In version 1.1.1, there is a new action hook that lets theme designers hook into the function that removes the featured image and remove the action used in their specific theme.
In your case, it would be something like this:
add_action( 'gfv_remove_post_image', 'your_theme_remove_post_image' );
function your_theme_remove_post_image(){
remove_action( 'genesis_entry_header', 'genesis_do_post_image', 1 );
}