Can't loggin Kali Linux 2.0 !!!

I upgraded to kali 2.0 but my root account can't use anymore, "That's didn't work, please try again" !!
I followed some pages to change password and that's didn't work too ? How i can fix this ? sorry for my bad English

Hi i had the same problem. I managed to add a 2nd account and login. but when I got logged in There was missing module and things just did not work correct.

This is how to add an account to kail

at the login screen press Alt-F1 this should bring up terminal. your root login should work here. then type the following

useradd -m user1 (put new username where user1 is)

passwd user1

Enter desired password twice Add user to sudo group (to allow user to install software, allow printing, use privileged mode etc.)

usermod -a -G sudo user1

(Note: -a means append or add and –G mean to specified group/groups) Change default shell of previously created user to bash

chsh -s /bin/bash user1

Then reboot and try your new login name and password should get you in..

Hope this helps