dropbox unpacking stucks with no errors

[Dmytro]

1) The release of Ubuntu you are using, via 'lsb_release -rd' or System -> About Ubuntu
dmytro@compaq:~$ lsb_release -rd
Description: Ubuntu 16.04.1 LTS
Release: 16.04

2) The version of the package you are using, via 'apt-cache policy pkgname' or by checking in Software Center
dmytro@compaq:~$ apt-cache policy nautilus-dropbox
nautilus-dropbox:
  Installed: 2.10.0-2
  Candidate: 2.10.0-2
  Version table:
 *** 2.10.0-2 500
        500 http://ua.archive.ubuntu.com/ubuntu xenial/multiverse amd64 Packages
        100 /var/lib/dpkg/status

3) What you expected to happen
Dropbox starts and running

4) What happened instead
Dropbox is installed, but every time I start it, I'm asked to install it and installation is stuck at unpacking dropbox.
dmytro@compaq:~$ dropbox start
Starting Dropbox...
The Dropbox daemon is not installed!
Run "dropbox start -i" to install the daemon
dmytro@compaq:~$ dropbox start -i
Starting Dropbox...

Same with result with sudo.

[Dmytro (sequentiality)]

Fixed.