Instalei o Scrapy usando os pacotes Ubuntu fornecidos no site do Scrapy. Mas ao iniciar um projeto Scrapy

scrapy startproject test 

Estou recebendo uma mensagem de erro como.

 Traceback (most recent call last):   File "/usr/bin/scrapy", line 5,
 in <module>
     from pkg_resources import load_entry_point   File "build/bdist.linux-x86_64/egg/pkg_resources/__init__.py", line 3084,
 in <module>
        File "build/bdist.linux-x86_64/egg/pkg_resources/__init__.py", line 3070, in _call_aside
        File "build/bdist.linux-x86_64/egg/pkg_resources/__init__.py", line 3097, in _initialize_master_working_set
        File "build/bdist.linux-x86_64/egg/pkg_resources/__init__.py", line 653, in _build_master
        File "build/bdist.linux-x86_64/egg/pkg_resources/__init__.py", line 666, in _build_from_requirements
        File "build/bdist.linux-x86_64/egg/pkg_resources/__init__.py", line 844, in resolve
      pkg_resources.ContextualVersionConflict: (pyasn1 0.1.7 (/usr/lib/python2.7/dist-packages),
 Requirement.parse('pyasn1>=0.1.8'), set(['pyasn1-modules']))

Por favor me ajude a resolver este erro. Estou executando o Python 2.7.6