It is possible to overwrite or replace WP without having to reproduce the entire site.
Here's how to do it. There are two critical things you must remember to keep: wp-contents folder and wp-config.php file.
Download the latest version of WP from
and unzip the file to your computer's desktop. You will have a folder named 'wordpress'.
FTP to your site. You'll find two folders: wp-admin and wp-includes. Delete them.
Now, using the FTP client, open the wordpress folder on your desktop. Upload the wp-admin folder from the desktop to the site.
Next, upload the wp-includes folder.
When this is completed (it takes a few minutes), upload all the individual files (not the folders) in the desktop wordpress folder to your site. It will ask if you want to overwrite them. Say yes.
I've had considerable experience with this.
After this is completed, check to see if the problem remains. If it does, we may need to reinstall the Framework. Let us know.
I'll be here today and tomorrow to try and help.