I have just updated the WP site following the instructions in the Updating WP Codex. I ftp'd the files making sure that all files needed were in their proper places. Upon completion I went to the Admin Login and was propted to update the DB. I clicked the button to "Upgrade WP Database Now" and it goes to another page with the address of:www.nameofsite.com/wp-admin/upgrade.php?step=1&backto= and on the page is the WP logo and WordPress. There is nothing else. What can be done to correct this issue? All plugins were deactivated prior to update as instructed.