Daemon not starting

[davide]

Probably not a bug but a problem of my platform, but not sure.
Until yesterday I ran deluged (only daemon) on a Raspberry with Raspbian (a Debian distribution) and it worked perfectly.
Then, i reinstalled a clean image of the operating system, runned those commands to be up to date

sudo apt-get update
sudo apt-get upgrade

installed the daemon and the console with

sudo apt-get install deluged deluge-console

but when i try to start the deamon with the command

deluged

I get this strange error, which i have never seen before

Traceback (most recent call last):
  File "/usr/bin/deluged", line 5, in <module>
    from pkg_resources import load_entry_point
  File "/opt/python/lib/python2.7/site-packages/pkg_resources/__init__.py", line 2976, in <module>
    @_call_aside
  File "/opt/python/lib/python2.7/site-packages/pkg_resources/__init__.py", line 2962, in _call_aside
    f(*args, **kwargs)
  File "/opt/python/lib/python2.7/site-packages/pkg_resources/__init__.py", line 2989, in _initialize_master_working_set
    working_set = WorkingSet._build_master()
  File "/opt/python/lib/python2.7/site-packages/pkg_resources/__init__.py", line 660, in _build_master
    ws.require(__requires__)
  File "/opt/python/lib/python2.7/site-packages/pkg_resources/__init__.py", line 968, in require
    needed = self.resolve(parse_requirements(requirements))
  File "/opt/python/lib/python2.7/site-packages/pkg_resources/__init__.py", line 854, in resolve
    raise DistributionNotFound(req, requirers)
pkg_resources.DistributionNotFound: The 'deluge==1.3.10' distribution was not found and is required by the application

My python version is

Python 2.7.12

Please help, I need Deluge :) Thank to all the developers, this is a great project!

[Cas]

Have you tried purging deluge and reinstalling?