Sometimes when you transfer a wordpress site you will get errors. Keep in mind that your old server may be using a different version of PHP than your new server. If you keep getting prompted to download a file when you go to the front end of your website you may need to put this code into your htaccess file.
AddHandler application/x-httpd-php5 .php
WordPress Site Trying To Download A File was last modified: December 15th, 2016 by
A1WEBSITEPRO Social Media Pages
Here are my social media pages.