The Real Solution:
Files saved before you have "signed in" are corrupt and can not be re-opened after closing. After installing the software, go to file and sign in, before you begin the process. It is not enough to sign into your account online, if you are using an installed product. This will not help recover a corrupt file but will prevent you from starting over 4 times, like I did. Still a test file is a good idea (start>save>close>reopen>hope).
