CKAN安装错误：站点ckan_default和datapusher不存在
我正在尝试在64位的Ubuntu 13.10上安装CKAN，并且是按照这些说明进行的。我的机器上已经安装了Python 2.7.5以上的版本。但是，以下错误让我无法安装CKAN包：
$ sudo dpkg -i python-ckan_2.2_amd64.deb
Selecting previously unselected package python-ckan.
(Reading database ... 289528 files and directories currently installed.)
Unpacking python-ckan (from python-ckan_2.2_amd64.deb) ...
Setting up python-ckan (2.2-1) ...
Traceback (most recent call last):
File "/usr/lib/ckan/default/bin/paster", line 5, in <module>
from pkg_resources import load_entry_point
File "/usr/lib/ckan/default/local/lib/python2.7/site-packages/ \
distribute-0.6.24-py2.7.egg/pkg_resources.py", line 16, in <module>
import sys, os, zipimport, time, re, imp, types
File "/usr/lib/ckan/default/lib/python2.7/re.py", line 105, in <module>
import sre_compile
File "/usr/lib/ckan/default/lib/python2.7/sre_compile.py", line 14, in <module>
import sre_parse
File "/usr/lib/ckan/default/lib/python2.7/sre_parse.py", line 17, in <module>
from sre_constants import *
File "/usr/lib/ckan/default/lib/python2.7/sre_constants.py", line 18, in <module>
from _sre import MAXREPEAT
ImportError: cannot import name MAXREPEAT
System start/stop links for /etc/init.d/nginx already exist.
System start/stop links for /etc/init.d/apache2 already exist.
ERROR: Site ckan_default does not exist!
ERROR: Site datapusher does not exist!