gpodder and ubuntu

[Brian]

Having just moved over to Ubuntu (16.04 LTS) when I managed to work
round a problem with the installer, I'm having trouble getting gpodder
up and running again.

It worked just fine under Debian Stretch, but when I installed it
again (from the repositores), trying to run the program produced the
load of (quoted) output pasted below.

Can somebody please translate this into what I need to do to get
gpodder running again, please, because it's over my head... :(

Thanks.

<paste>

> brian at brian-ubuntu:~$ gpodder
> 
> ** (gpodder:13361): WARNING **: Couldn't connect to accessibility bus: Failed to connect to socket /tmp/dbus-kVKoNp5AcQ: Connection refused
> 1513096484.441575 [gpodder.sync] WARNING: Could not find gpod
> 1513096484.441853 [gpodder.sync] WARNING: Could not find eyed3.mp3
> 1513096484.717034 [gpodder.log] ERROR: Uncaught exception: Traceback (most recent call last):
>   File "/usr/bin/gpodder", line 160, in <module>
>     main()
>   File "/usr/bin/gpodder", line 155, in main
>     main.main(options)
>   File "/usr/lib/python2.7/dist-packages/gpodder/gtkui/main.py", line 3500, in main
>     gp = gPodder(bus_name, core.Core(UIConfig, model_class=Model), options)
>   File "/usr/lib/python2.7/dist-packages/gpodder/gtkui/main.py", line 121, in __init__
>     BuilderWidget.__init__(self, None)
>   File "/usr/lib/python2.7/dist-packages/gpodder/gtkui/interface/common.py", line 38, in __init__
>     GtkBuilderWidget.__init__(self, gpodder.ui_folders, gpodder.textdomain, **kwargs)
>   File "/usr/lib/python2.7/dist-packages/gpodder/gtkui/base.py", line 66, in __init__
>     self.new()
>   File "/usr/lib/python2.7/dist-packages/gpodder/gtkui/main.py", line 234, in new
>     self.channels = self.model.get_podcasts()
>   File "/usr/lib/python2.7/dist-packages/gpodder/model.py", line 1358, in get_podcasts
>     self.children = self.db.load_podcasts(podcast_factory)
>   File "/usr/lib/python2.7/dist-packages/gpodder/dbsqlite.py", line 159, in load_podcasts
>     cur = self.cursor()
>   File "/usr/lib/python2.7/dist-packages/gpodder/dbsqlite.py", line 103, in cursor
>     return self.db.cursor()
>   File "/usr/lib/python2.7/dist-packages/gpodder/dbsqlite.py", line 94, in db
>     schema.upgrade(self._db, self.database_file)
>   File "/usr/lib/python2.7/dist-packages/gpodder/schema.py", line 202, in upgrade
>     assert version == CURRENT_VERSION
> AssertionError
> 
> Traceback (most recent call last):
>   File "/usr/bin/gpodder", line 160, in <module>
>     main()
>   File "/usr/bin/gpodder", line 155, in main
>     main.main(options)
>   File "/usr/lib/python2.7/dist-packages/gpodder/gtkui/main.py", line 3500, in main
>     gp = gPodder(bus_name, core.Core(UIConfig, model_class=Model), options)
>   File "/usr/lib/python2.7/dist-packages/gpodder/gtkui/main.py", line 121, in __init__
>     BuilderWidget.__init__(self, None)
>   File "/usr/lib/python2.7/dist-packages/gpodder/gtkui/interface/common.py", line 38, in __init__
>     GtkBuilderWidget.__init__(self, gpodder.ui_folders, gpodder.textdomain, **kwargs)
>   File "/usr/lib/python2.7/dist-packages/gpodder/gtkui/base.py", line 66, in __init__
>     self.new()
>   File "/usr/lib/python2.7/dist-packages/gpodder/gtkui/main.py", line 234, in new
>     self.channels = self.model.get_podcasts()
>   File "/usr/lib/python2.7/dist-packages/gpodder/model.py", line 1358, in get_podcasts
>     self.children = self.db.load_podcasts(podcast_factory)
>   File "/usr/lib/python2.7/dist-packages/gpodder/dbsqlite.py", line 159, in load_podcasts
>     cur = self.cursor()
>   File "/usr/lib/python2.7/dist-packages/gpodder/dbsqlite.py", line 103, in cursor
>     return self.db.cursor()
>   File "/usr/lib/python2.7/dist-packages/gpodder/dbsqlite.py", line 94, in db
>     schema.upgrade(self._db, self.database_file)
>   File "/usr/lib/python2.7/dist-packages/gpodder/schema.py", line 202, in upgrade
>     assert version == CURRENT_VERSION
> AssertionError
> brian at brian-ubuntu:~$