python problem when trying to run deluge-web

[Mereo]

I have Deluge 1.2.3 on my ubuntu 9.04 server and I'm having problems running deluge-web, this is what I get:

Code: Select all

Traceback (most recent call last):
  File "/usr/bin/deluge-web", line 5, in <module>
    from pkg_resources import load_entry_point
  File "/usr/lib/python2.6/dist-packages/pkg_resources.py", line 2566, in <module>
    parse_requirements(__requires__), Environment()
  File "/usr/lib/python2.6/dist-packages/pkg_resources.py", line 524, in resolve
    raise DistributionNotFound(req)  # XXX put more info here
pkg_resources.DistributionNotFound: deluge==1.2.0-rc1-dev

I can't figure out the problem...
Thanks for the help.