Pagination import error

[Carlos Aboim]

Hi there,
I am getting this error on my code execution:

Request Method: GET
Request URL: http://127.0.0.1:8000/admin
Django Version: 1.3
Exception Type: ImportError
Exception Value:

cannot import name Paginator

Exception Location: /Library/Frameworks/Python.

framework/Versions/2.7/
lib/python2.7/site-packages/django/utils/importlib.py in
import_module, line 35
Python Executable: /Library/Frameworks/Python.framework/Versions/2.7/
Resources/Python.app/Contents/MacOS/Python
Python Version: 2.7.1

 

...and the only thing I can think of is the page_per_50 that I have setted in admin.py of my project
I suppose it's got to be with the Django version (1.3) how do I overcome this inssue?

thank you