There is a new update available for News Magazine Theme 640. Version 1.6.5 improves the thumbnail functions to allow for images to be re-used from the media library. Previously if you inserted an image from your media library and that image was not in the gallery for the specific post the image would not show up. In version 1.6.5 this has been sorted out so now, if you already have images uploaded that you want to re-use you can just insert them from your media library and they should be displayed.
Working on fixing it so you can also use remote images (images linked to from sources outside of your server). This ability is not currently present so if you have images in your post that have a remote/external URL those images will not show up on the homepage.
Version 1.6.5 also adds a new option to the admin for those of you using News Magazine Theme 640 in blog mode. If you want to include the author and date byline under the title for each post shown on the index page you can activate this option from the admin. It is made optional as some people want the byline and others do not.
Please report any problems you are having with version 1.6.5 of News Magazine Theme 640 and thank you for using the theme.