Two main issues I've run into:

Code
The following files do not exist in your install
(Make sure these are uploaded)
scripts/editnotify.inc.php
scripts/editnotify.inc.php
scripts/editnotify.inc.php

editnotify.php doesn't exist in the zip file, was introduced in 7.3 and is referenced in a number of places.

Code
The following files are reporting a wrong version #
(Make sure you updated these files)
templates/default/post_comments.tpl

post_comments.tpl doesn't exist in the zip file and was introduced in 7.2.