Django-lfs "There is no module named appconf"

I had a problem after installing django-lfs

'compress' is not a valid tag library: ImportError increased load compress.templatetags.compress: There is no module named appconf

Request Method: GET
Request URL:    
Django Version: 1.3.1
Exception Type: TemplateSyntaxError
Exception Value:    
'compress' is not a valid tag library: ImportError raised loading compressor.templatetags.compress: No module named appconf
Exception Location: /usr/local/lib/python2.7/dist-packages/django/template/defaulttags.py in load, line 1054
Python Executable:  /usr/bin/python
Python Version: 2.7.5

http://dpaste.com/1653897/

how to fix it ??