When I try to edit Standards, by Tortoise (Brazilian release – http://musicbrainz.org/release/bcdd7305-332c-4ff4-9e9e-00bab5b54c44 ), the first screen works fine; but when I click "next", I get the following error:

Internal Server Error

Oops, something went wrong!

Error:

Caught exception in MusicBrainz::Server::Controller::ReleaseEditor::Edit->edit "Attribute (params) does not pass the type constraint because: Validation failed for 'HashRef' with value undef at accessor HTML::FormHandler::params (defined at local/lib/perl5/HTML/FormHandler.pm line 182) line 4
HTML::FormHandler::params('MusicBrainz::Server::Form::ReleaseEditor::Tracklist=HASH(0xcd...', undef) called at local/lib/perl5/HTML/FormHandler.pm line 388
HTML::FormHandler::setup_form('MusicBrainz::Server::Form::ReleaseEditor::Tracklist=HASH(0xcd...', 'params', undef) called at local/lib/perl5/HTML/FormHandler.pm line 283
HTML::FormHandler::process('MusicBrainz::Server::Form::ReleaseEditor::Tracklist=HASH(0xcd...', 'params', undef) called at lib/MusicBrainz/Server/Form.pm line 109
MusicBrainz::Server::Form::unserialize('MusicBrainz::Server::Form::ReleaseEditor::Tracklist=HASH(0xcd...', 'HASH(0xcd95798)') called at lib/MusicBrainz/Server/Wizard.pm line 528
MusicBrainz::Server::Wizard::_load_form('MusicBrainz::Server::Wizard::ReleaseEditor::Edit=HASH(0xbcba970)', 1, 'serialized', 'HASH(0xcd95798)') called at lib/MusicBrainz/Server/Wizard.pm line 238
MusicBrainz::Server::Wizard::_load_page('MusicBrainz::Server::Wizard::ReleaseEditor::Edit=HASH(0xbcba970)', 1) called at lib/MusicBrainz/Server/Wizard.pm line 172
MusicBrainz::Server::Wizard::navigate_to_page('MusicBrainz::Server::Wizard::ReleaseEditor::Edit=HASH(0xbcba970)') called at lib/MusicBrainz/Server/Wizard.pm line 401
MusicBrainz::Server::Wizard::_route('MusicBrainz::Server::Wizard::ReleaseEditor::Edit=HASH(0xbcba970)', 'MusicBrainz::Server::Form::ReleaseEditor::Information=HASH(0x...') called at lib/MusicBrainz/Server/Wizard.pm line 132
MusicBrainz::Server::Wizard::process('MusicBrainz::Server::Wizard::ReleaseEditor::Edit=HASH(0xbcba970)') called at lib/MusicBrainz/Server/Wizard/ReleaseEditor.pm line 92
MusicBrainz::Server::Wizard::ReleaseEditor::run('MusicBrainz::Server::Wizard::ReleaseEditor::Edit=HASH(0xbcba970)') called at lib/MusicBrainz/Server/Controller/ReleaseEditor/Edit.pm line 17
MusicBrainz::Server::Controller::ReleaseEditor::Edit::edit('MusicBrainz::Server::Controller::ReleaseEditor::Edit=HASH(0xa...', 'MusicBrainz::Server=HASH(0xb4343c8)') called at local/lib/perl5/Catalyst/Action.pm line 65
Catalyst::Action::execute('Catalyst::Action=HASH(0xb025a70)', 'MusicBrainz::Server::Controller::ReleaseEditor::Edit=HASH(0xa...', 'MusicBrainz::Server=HASH(0xb4343c8)') called at local/lib/perl5/Catalyst.pm line 1667
eval

Unknown macro: {...}

called at local/lib/perl5/Catalyst.pm line 1667
Catalyst::execute('MusicBrainz::Server=HASH(0xb4343c8)', 'MusicBrainz::Server::Controller::ReleaseEditor::Edit', 'Catalyst::Action=HASH(0xb025a70)') called at local/lib/perl5/Catalyst/Plugin/StackTrace.pm line 94
Catalyst::Plugin::StackTrace::execute('MusicBrainz::Server=HASH(0xb4343c8)', 'MusicBrainz::Server::Controller::ReleaseEditor::Edit', 'Catalyst::Action=HASH(0xb025a70)') called at lib/MusicBrainz/Server.pm line 306
MusicBrainz::Server::execute('MusicBrainz::Server=HASH(0xb4343c8)', 'MusicBrainz::Server::Controller::ReleaseEditor::Edit', 'Catalyst::Action=HASH(0xb025a70)') called at local/lib/perl5/Catalyst/Action.pm line 60
Catalyst::Action::dispatch('Catalyst::Action=HASH(0xb025a70)', 'MusicBrainz::Server=HASH(0xb4343c8)') called at local/lib/perl5/Catalyst/ActionChain.pm line 38
Catalyst::ActionChain::dispatch('Catalyst::ActionChain=HASH(0xb436f48)', 'MusicBrainz::Server=HASH(0xb4343c8)') called at local/lib/perl5/Catalyst/Controller.pm line 125
Catalyst::Controller::_ACTION('MusicBrainz::Server::Controller::ReleaseEditor::Add=HASH(0xae...', 'MusicBrainz::Server=HASH(0xb4343c8)') called at local/lib/perl5/Catalyst/Action.pm line 65
Catalyst::Action::execute('Catalyst::Action=HASH(0xb025518)', 'MusicBrainz::Server::Controller::ReleaseEditor::Add=HASH(0xae...', 'MusicBrainz::Server=HASH(0xb4343c8)') called at local/lib/perl5/Catalyst.pm line 1667
eval

called at local/lib/perl5/Catalyst.pm line 1667
Catalyst::execute('MusicBrainz::Server=HASH(0xb4343c8)', 'MusicBrainz::Server::Controller::ReleaseEditor::Add', 'Catalyst::Action=HASH(0xb025518)') called at local/lib/perl5/Catalyst/Plugin/StackTrace.pm line 94
Catalyst::Plugin::StackTrace::execute('MusicBrainz::Server=HASH(0xb4343c8)', 'MusicBrainz::Server::Controller::ReleaseEditor::Add', 'Catalyst::Action=HASH(0xb025518)') called at lib/MusicBrainz/Server.pm line 306
MusicBrainz::Server::execute('MusicBrainz::Server=HASH(0xb4343c8)', 'MusicBrainz::Server::Controller::ReleaseEditor::Add', 'Catalyst::Action=HASH(0xb025518)') called at local/lib/perl5/Catalyst/Action.pm line 60
Catalyst::Action::dispatch('Catalyst::Action=HASH(0xb025518)', 'MusicBrainz::Server=HASH(0xb4343c8)') called at local/lib/perl5/Catalyst/Dispatcher.pm line 257
Catalyst::Dispatcher::_do_forward('Catalyst::Dispatcher=HASH(0x3382750)', 'forward', 'MusicBrainz::Server=HASH(0xb4343c8)', '_ACTION') called at local/lib/perl5/Catalyst/Dispatcher.pm line 237
Catalyst::Dispatcher::forward('Catalyst::Dispatcher=HASH(0x3382750)', 'MusicBrainz::Server=HASH(0xb4343c8)', '_ACTION') called at local/lib/perl5/Catalyst.pm line 342
Catalyst::forward('MusicBrainz::Server=HASH(0xb4343c8)', '_ACTION') called at local/lib/perl5/Catalyst/Controller.pm line 99
Catalyst::Controller::_DISPATCH('MusicBrainz::Server::Controller::ReleaseEditor::Add=HASH(0xae...', 'MusicBrainz::Server=HASH(0xb4343c8)') called at local/lib/perl5/Catalyst/Action.pm line 65
Catalyst::Action::execute('Catalyst::Action=HASH(0xb186f40)', 'MusicBrainz::Server::Controller::ReleaseEditor::Add=HASH(0xae...', 'MusicBrainz::Server=HASH(0xb4343c8)') called at local/lib/perl5/Catalyst.pm line 1667
eval

Unknown macro: {...}

called at local/lib/perl5/Catalyst.pm line 1667
Catalyst::execute('MusicBrainz::Server=HASH(0xb4343c8)', 'MusicBrainz::Server::Controller::ReleaseEditor::Add', 'Catalyst::Action=HASH(0xb186f40)') called at local/lib/perl5/Catalyst/Plugin/StackTrace.pm line 94
Catalyst::Plugin::StackTrace::execute('MusicBrainz::Server=HASH(0xb4343c8)', 'MusicBrainz::Server::Controller::ReleaseEditor::Add', 'Catalyst::Action=HASH(0xb186f40)') called at lib/MusicBrainz/Server.pm line 306
MusicBrainz::Server::execute('MusicBrainz::Server=HASH(0xb4343c8)', 'MusicBrainz::Server::Controller::ReleaseEditor::Add', 'Catalyst::Action=HASH(0xb186f40)') called at local/lib/perl5/Catalyst/Action.pm line 60
Catalyst::Action::dispatch('Catalyst::Action=HASH(0xb186f40)', 'MusicBrainz::Server=HASH(0xb4343c8)') called at local/lib/perl5/Catalyst/Dispatcher.pm line 257
Catalyst::Dispatcher::_do_forward('Catalyst::Dispatcher=HASH(0x3382750)', 'forward', 'MusicBrainz::Server=HASH(0xb4343c8)', '/release_editor/_DISPATCH') called at local/lib/perl5/Catalyst/Dispatcher.pm line 237
Catalyst::Dispatcher::forward('Catalyst::Dispatcher=HASH(0x3382750)', 'MusicBrainz::Server=HASH(0xb4343c8)', '/release_editor/_DISPATCH') called at local/lib/perl5/Catalyst.pm line 342
Catalyst::forward('MusicBrainz::Server=HASH(0xb4343c8)', '/release_editor/_DISPATCH') called at local/lib/perl5/Catalyst/Dispatcher.pm line 105
Catalyst::Dispatcher::dispatch('Catalyst::Dispatcher=HASH(0x3382750)', 'MusicBrainz::Server=HASH(0xb4343c8)') called at local/lib/perl5/Catalyst.pm line 1613
Catalyst::dispatch('MusicBrainz::Server=HASH(0xb4343c8)') called at lib/MusicBrainz/Server.pm line 270
Class::MOP::Class:::around('CODE(0x2bde548)', 'MusicBrainz::Server=HASH(0xb4343c8)') called at local/lib/perl5/x86_64-linux-gnu-thread-multi/Class/MOP/Method/Wrapped.pm line 162
Class::MOP::Method::Wrapped::_ANON_('MusicBrainz::Server=HASH(0xb4343c8)') called at local/lib/perl5/x86_64-linux-gnu-thread-multi/Class/MOP/Method/Wrapped.pm line 91
MusicBrainz::Server::dispatch('MusicBrainz::Server=HASH(0xb4343c8)') called at local/lib/perl5/Catalyst.pm line 1963
Catalyst::_ANON_() called at local/lib/perl5/Try/Tiny.pm line 76
eval

called at local/lib/perl5/Try/Tiny.pm line 67
Try::Tiny::try('CODE(0xb415a48)', 'Try::Tiny::Catch=REF(0xb8e5958)') called at local/lib/perl5/Catalyst.pm line 1969
Catalyst::handle_request('MusicBrainz::Server', 'env', 'HASH(0xb415cd0)') called at local/lib/perl5/Catalyst/Plugin/AutoRestart.pm line 114
Catalyst::Plugin::AutoRestart::handle_request('MusicBrainz::Server', 'env', 'HASH(0xb415cd0)') called at local/lib/perl5/Catalyst/Engine.pm line 856
Catalyst::Engine::_ANON_('CODE(0xb3f3068)') called at local/lib/perl5/Plack/Handler/FCGI.pm line 134
Plack::Handler::FCGI::run('Plack::Handler::FCGI=HASH(0x107ca30)', 'CODE(0xb382460)') called at local/lib/perl5/Plack/Loader.pm line 88
Plack::Loader::run('Plack::Loader=HASH(0x1045e00)', 'Plack::Handler::FCGI=HASH(0x107ca30)') called at local/lib/perl5/Plack/Runner.pm line 263
Plack::Runner::run('Plack::Runner=HASH(0xe48808)') called at local/bin/plackup line 10"

Stack trace:

line 109 MusicBrainz::Server::Form
line 528 MusicBrainz::Server::Wizard
line 238 MusicBrainz::Server::Wizard
line 172 MusicBrainz::Server::Wizard
line 401 MusicBrainz::Server::Wizard
line 132 MusicBrainz::Server::Wizard
line 92 MusicBrainz::Server::Wizard::ReleaseEditor
line 17 MusicBrainz::Server::Controller::ReleaseEditor::Edit
line 306 MusicBrainz::Server
line 306 MusicBrainz::Server
line 306 MusicBrainz::Server
line 270 MusicBrainz::Server

Request data:

$VAR1 = {
'query_parameters' => {},
'body_parameters' => {
'artist_credit.names.0.name' => 'Tortoise',
'packaging_id' => '1',
'next' => "Next \x

Unknown macro: {bb}

",
'labels.1.deleted' => '0',
'release_group_id' => '54561',
'labels.0.deleted' => '0',
'id' => '1169378',
'date.day' => '',
'name' => 'Standards',
'barcode' => '7898133064388',
'labels.0.label_id' => '18064',
'labels.1.label_id' => '411',
'language_id' => '120',
'annotation' => '',
'date.month' => '',
'release_group.name' => 'Standards',
'wizard_page_id' => '0',
'labels.0.catalog_number' => 'T900/438-2',
'artist_credit.names.0.artist.id' => '11547',
'country_id' => '30',
'date.year' => '2001',
'labels.0.name' => 'Trama',
'labels.1.name' => 'Thrill Jockey',
'script_id' => '28',
'labels.1.catalog_number' => '',
'status_id' => '1',
'artist_credit.names.0.join_phrase' => '',
'wizard_session_id' => '0.556367422078388',
'comment' => '',
'gc-roman' => 'on',
'gc-mode' => 'English',
'artist_credit.names.0.artist.name' => 'Tortoise'
}
};

URL: http://musicbrainz.org/release/bcdd7305-332c-4ff4-9e9e-00bab5b54c44/edit

It doesn't seem to be related with the selection of the "correct" release groups, artist and labels (I've tried manually selecting the correct ones and got an error all the same).