It sounds like this is a common bug in that version Adminimize. You might have better luck posting your question on WordPress.org under the plugin: http://wordpress.org/support/topic/184-breaks-featured-image-functionality
I would make a backup and put it on a dev URL and test it to latest version. What plugins are being used?
You have upgraded to WordPress 3.8.1 properly using your website admin panel. The problem is that GoDaddy thinks that you should do everything through them rather than you being able to think for yourself. In the same area where you have been trying to upgrade WordPress through GoDaddy there should be a link that allows … Read more
Visit http://your-domain.com/wp-admin/update-core.php and look for the heading “An updated version of WordPress is available.” Below that there should a button for “Update Now”. You can update by hitting that button. If it’s not there then you will have to manually update your website. For that instructions are here. https://codex.wordpress.org/Updating_WordPress#Manual_Update
I would do a search of your database for the live site URL. If you are using phpmyadmin then that would be really easy to do. It has to be in your database somewhere for it to be linking there.
WordPress not updated correctly
One Click method should be fine unless you’re getting an error or you know you have some sort of customization in place that would require you to manually update in order not to overwrite certain files, or something. I think you’d know if you need to do it manually. Just backup your database and files … Read more
Site showing version 4.1.16 as latest version
WP website won’t accept any new content – need dedicated hosting?
It looks like you have already tried to update WordPress but the process broked. So to resolve your problem you can go with the following: 1. Click to “Re-install now” button and install WordPress again. 2. Click to ” Download” and install the WordPress manually.