New Blog Templages Error, Custom Fields in posts and pages not showing correctly

On my newly created blogs using the blog templates plugin the blogs are not showing the Custom Fields in posts and pages correctly. I have a custom field that is set up to show a thumbnail on the front page of my theme but the thumbnail images are not being shown. They are linked to the thumbnail images in the template blog which is fine, but even then they are not showing the images. I have tried changing the image link in the Custom Fields section on the posts and pages to the new URL of the copied image but that doesn’t work either. Help needed ASAP Thank you.