I used the picard plugin to add release from cluster and got the following error

Oops, something went wrong!

Error:

Caught exception in MusicBrainz::Server::Controller::ReleaseEditor::Add->add "Not an ARRAY reference at lib/MusicBrainz/Server/Wizard/ReleaseEditor.pm line 1567."

Stack trace:

line 1567 MusicBrainz::Server::Wizard::ReleaseEditor
line 307 MusicBrainz::Server::Wizard
line 124 MusicBrainz::Server::Wizard
line 92 MusicBrainz::Server::Wizard::ReleaseEditor
line 23 MusicBrainz::Server::Controller::ReleaseEditor::Add
line 322 MusicBrainz::Server
line 322 MusicBrainz::Server
line 322 MusicBrainz::Server
line 286 MusicBrainz::Server

Request data:

$VAR1 = {
'query_parameters' => {},
'body_parameters' =>

{ 'mediums.-1.track.4.name' => 'Snagglepuss', 'mediums.-1.track.4.length' => '180000', 'mediums.-1.track.2.name' => 'Freeny', 'name' => 'Gone', 'mediums.-1.track.1.length' => '390000', 'mediums.-1.track.3.name' => 'Smoking Gun in Wasco', 'mediums.-1.track.0.name' => 'Smoking Gun in Wasco', 'mediums.-1.track.5.length' => '287400', 'mediums.-1.track.0.length' => '320840', 'mediums.-1.track.1.name' => 'Snagglepuss', 'mediums.-1.track.2.length' => '514000', 'mediums.-1.track.3.length' => '160000', 'mediums.-1.track.5.name' => 'Freeny', 'artist_credit.names.0.artist.name' => 'Gone' }

};

URL: http://musicbrainz.org/release/add