Why mess around copy/pasting when tiki-install.php can perform the upgrade for you without issue?
Upgrade all the files to the new release, then goto tiki-install.php, enter your admin password and choose the upgrade option. Click the button, Click to disable the script, then enjoy your site.
Dont mess around with phpMyAdmin, do it properly in the first place.
p.s. Bluehost is not a recommend site, doc.tikiwiki.org had to be moved from them recently because of problems.