Found this elsewhere and thought I would post it here. Kudos to the original poster for this fix.
It appears that during the changes in API at TVDB they changed the file names inside the .zip files that Ex*dus forks use to grab their data. Because of this change Ex*dus and its forks fail to read the data. The change is a very simple one. Instead of the files reading as 'en.xml' they are now 'en.zip.xml'. A simple replace all in indexers/episodes.py of the following should work:
Replace this: zip.read('%s.xml'
With this: zip.read('%s.zip.xml'
The only issue I've had so far is no season artwork, but at least everything else is loading. So hopefully this will all be sorted in your favourite add-on's soon.