LMDE 2 fail login after updates

[Denis]

Linux Mint Debian Edition 2 Cinnamon x64, new installation via USB flash drive.
After install system i use update manager to install all available updates (default 1,2 & 3 level). Then i reboot and try login but can't. I trying reinstall system 3 times, but whatever i fail login after updates.
Most likely one of the reasons is either incorrect installation of the update cinnamon, or update manager delete old version cinnamon and does not install new version (cinnamon v3.0.1). Personally, me helped to solve the problem use in the recovery mode as root "apt-get install cinnamon", use help by one of the members of the official forum. The theme of this issue on the official forum can be viewed at the link below.
https://forums.linuxmint.com/viewtopic.php?f=236&t=221063
In my opinion the problem should be assigned the status of critical, because an inexperienced user will not be able to solve it without help, and without its solution is impossible to use system.