[Answer]-Django settings — could not import unipath

It seems like I figured out the problem. The think was that I did a lot of mess. I had django and other apps installed globaly (long before I started developing the project). Then I installed virtualenvwrapper and created virtualenv. Working in the virtualenv I installed the required dependencies and the django. But when I was trying to run that I ran the globally installed version of django. As a result there were some incompatibilities.
After I uninstalled global packages, everithing is ok.

How I figured out it? Thanks a lot to Jeff Knup and his post Starting a Django 1.4 Project the Right Way. I walked through the described steps and when I ran

(my-virtualenv)$ which django-admin.py

it showed me the following path:

/usr/local/bin/django-admin

while it should have:

$HOME/.virtualenvs/

that was a sign that something is wrong.

Thanks a lot for everybody for trying to help me.