Get this error message when trying to create a release.

Error:

Caught exception in MusicBrainz::Server::Controller::ReleaseEditor::Add->add "Can't use an undefined value as a HASH reference at /home/musicbrainz/musicbrainz-server/script/../lib/MusicBrainz/Server/Wizard.pm line 257."
Stack trace:
line 257 MusicBrainz::Server::Wizard
line 739 MusicBrainz::Server::Wizard::ReleaseEditor
line 75 MusicBrainz::Server::Wizard::ReleaseEditor
line 168 MusicBrainz::Server::Wizard
line 388 MusicBrainz::Server::Wizard
line 132 MusicBrainz::Server::Wizard
line 92 MusicBrainz::Server::Wizard::ReleaseEditor
line 23 MusicBrainz::Server::Controller::ReleaseEditor::Add
line 273 MusicBrainz::Server
Request data:

$VAR1 = {
'query_parameters' =>

{ 'artist' => '2292d6f2-7541-4316-ac3a-c1f83b55adb4' }

,
'body_parameters' =>

{ 'rec_mediums.3.associations.10.edit_sha1' => 'MqpWC1K4YrXPjID05e5RJVctxqg', 'rec_mediums.3.associations.5.gid' => 'new', 'rec_mediums.3.associations.24.gid' => 'new', 'rec_mediums.1.associations.7.confirmed' => '1', 'rec_mediums.2.associations.2.edit_sha1' => 'TBdnqpuatRd7pkVFYJ++GR/UlsA', 'rec_mediums.1.associations.13.edit_sha1' => 'pKXEmOrRZiS8lAZ1LnGb09xvO3U', 'select-recording-3-23' => 'on', 'rec_mediums.3.associations.8.gid' => 'new', 'rec_mediums.3.associations.3.edit_sha1' => 'E9pJ+UG7BPkoiws+m3cOfl8x/f0', 'rec_mediums.1.associations.16.edit_sha1' => '4mjXat0a6R44DUCaEcsldqVyNUc', 'select-recording-1-2' => 'on', 'rec_mediums.2.associations.18.edit_sha1' => 'PRfbjDprqTk8QW7G8Z2oUfnWA+4', 'select-recording-1-1' => 'on', 'rec_mediums.3.associations.1.confirmed' => '1', 'rec_mediums.3.associations.1.edit_sha1' => 'RxVb1JGyB1ufKNOFJB5BxirZNs0', 'rec_mediums.1.associations.2.confirmed' => '1', 'rec_mediums.3.tracklist_id' => '', 'rec_mediums.1.associations.4.gid' => 'new', 'select-recording-1-13' => 'on', 'rec_mediums.1.associations.7.gid' => 'new', 'select-recording-3-9' => 'on', 'rec_mediums.3.associations.23.edit_sha1' => 'E/heNj4mLNcPc1wo5o4yXKzBLug', 'rec_mediums.3.associations.16.gid' => 'new', 'rec_mediums.3.associations.25.confirmed' => '1', 'rec_mediums.1.associations.8.confirmed' => '1', 'rec_mediums.2.associations.0.confirmed' => '1', 'select-recording-2-15' => 'on', 'rec_mediums.3.associations.14.edit_sha1' => 'rYD4KV5aWv5lK2hT1f6CmdlxshY', 'rec_mediums.3.associations.7.confirmed' => '1', 'rec_mediums.2.associations.19.gid' => 'new', 'select-recording-3-16' => 'on', 'select-recording-3-3' => 'on', 'rec_mediums.1.associations.14.confirmed' => '1', 'rec_mediums.3.associations.10.gid' => 'new', 'rec_mediums.1.associations.15.gid' => 'new', 'rec_mediums.2.associations.7.gid' => 'new', 'rec_mediums.3.associations.1.gid' => 'new', 'rec_mediums.2.associations.15.edit_sha1' => 'E5pZnXmwdLH6DM5DM8Y8ihZtGsQ', 'rec_mediums.3.associations.23.confirmed' => '1', 'rec_mediums.3.associations.11.confirmed' => '1', 'rec_mediums.3.associations.15.edit_sha1' => '+fMdKoBCn3XP/bXC9G63/h8xjcQ', 'rec_mediums.2.associations.3.confirmed' => '1', 'rec_mediums.2.associations.14.confirmed' => '1', 'select-recording-3-15' => 'on', 'select-recording-1-5' => 'on', 'rec_mediums.3.associations.22.confirmed' => '1', 'rec_mediums.2.associations.12.edit_sha1' => 'IW1dZdvJyscpxN8vZu+Zw/BAtVE', 'rec_mediums.1.associations.2.edit_sha1' => 'V5gE2Cb/+oieuquxGAISIpqOQH0', 'rec_mediums.2.associations.1.gid' => 'new', 'select-recording-2-22' => 'on', 'rec_mediums.3.associations.10.confirmed' => '1', 'select-recording-1-7' => 'on', 'rec_mediums.3.associations.20.gid' => 'new', 'select-recording-2-5' => 'on', 'rec_mediums.3.associations.6.gid' => 'new', 'rec_mediums.3.associations.19.gid' => 'new', 'rec_mediums.2.associations.3.edit_sha1' => 'muwJZ7hZX9bb7BDI2QeSKPyCw40', 'rec_mediums.2.associations.7.confirmed' => '1', 'rec_mediums.2.associations.14.edit_sha1' => 'ffS1xAXg/Eg+Lk/AsCQraQXVILQ', 'select-recording-3-8' => 'on', 'rec_mediums.2.associations.21.confirmed' => '1', 'rec_mediums.2.associations.9.edit_sha1' => 'kmwjhv97ySyS/fPePhvI/pZHfSM', 'rec_mediums.3.associations.21.gid' => 'new', 'rec_mediums.1.associations.9.confirmed' => '1', 'select-recording-3-14' => 'on', 'select-recording-3-5' => 'on', 'rec_mediums.3.associations.13.confirmed' => '1', 'select-recording-1-3' => 'on', 'rec_mediums.1.associations.0.gid' => 'new', 'rec_mediums.1.associations.14.edit_sha1' => 's0l1pNLj1jpgd4cAsOrOc3pkvZ8', 'select-recording-1-12' => 'on', 'rec_mediums.3.associations.18.confirmed' => '1', 'select-recording-2-19' => 'on', 'rec_mediums.3.associations.0.edit_sha1' => 'YOyd2supsjnmilvuBflvKRvhJm4', 'rec_mediums.2.associations.16.gid' => 'new', 'rec_mediums.1.associations.13.confirmed' => '1', 'rec_mediums.1.associations.14.gid' => 'new', 'rec_mediums.3.associations.7.gid' => 'new', 'rec_mediums.1.associations.0.confirmed' => '1', 'rec_mediums.2.associations.5.edit_sha1' => 'ynnKtwagmYEPRACIEjpAlbzSyLE', 'rec_mediums.2.associations.18.gid' => 'new', 'rec_mediums.2.associations.9.confirmed' => '1', 'rec_mediums.3.associations.6.edit_sha1' => 'pDzsFtq7Wnpg54vEC9d0B1ftxv4', 'select-recording-1-15' => 'on', 'rec_mediums.2.associations.20.edit_sha1' => 'jj9iETvDzEYAeCxz4ZuQKWp6Vo4', 'rec_mediums.1.associations.2.gid' => 'new', 'rec_mediums.3.associations.3.confirmed' => '1', 'select-recording-2-1' => 'on', 'rec_mediums.1.associations.11.edit_sha1' => 'ezFlu4hw3aXghHRx6lm+HLRqD7s', 'rec_mediums.3.associations.18.edit_sha1' => 'xg8HKj2I4Y1IPjw5KnATTxnHMSY', 'rec_mediums.1.associations.0.edit_sha1' => 'H8pvqCfm36gz+YRUN9vHMjmOWgI', 'rec_mediums.2.associations.20.gid' => 'new', 'select-recording-3-19' => 'on', 'select-recording-2-18' => 'on', 'rec_mediums.2.associations.1.edit_sha1' => 'QZKCLMWkpirK+9qaBcNrtYfNP2s', 'rec_mediums.2.associations.15.gid' => 'new', 'select-recording-3-25' => 'on', 'rec_mediums.3.associations.13.edit_sha1' => 'ILXM5nDyAqMQE/txf1Ej8fhbz9w', 'rec_mediums.3.associations.19.edit_sha1' => '93mzQb5c6Lq6dXB1gh/Y99rYvYo', 'rec_mediums.1.associations.9.edit_sha1' => '+LtzIKEHPIZom6hyqioF/cKlSY0', 'rec_mediums.1.associations.8.gid' => 'new', 'select-recording-2-11' => 'on', 'rec_mediums.2.associations.7.edit_sha1' => 'OCcYUQmSso9dWUORX/1PSLvKnyM', 'rec_mediums.2.associations.1.confirmed' => '1', 'rec_mediums.1.associations.6.confirmed' => '1', 'rec_mediums.2.associations.6.edit_sha1' => '2VzF+TYK9bbaUEO5M2p8dgijg7Q', 'select-recording-2-9' => 'on', 'select-recording-3-1' => 'on', 'wizard_page_id' => '3', 'rec_mediums.2.associations.4.confirmed' => '1', 'select-recording-3-22' => 'on', 'select-recording-3-10' => 'on', 'rec_mediums.1.associations.5.edit_sha1' => 'rYK/JlAWM8KpLiZNHJIW1ieBgZU', 'rec_mediums.1.associations.12.edit_sha1' => 'SWZccWLh5slYvBckCE1LWTQzM7c', 'rec_mediums.2.associations.8.gid' => 'new', 'rec_mediums.2.associations.11.confirmed' => '1', 'rec_mediums.2.associations.2.confirmed' => '1', 'rec_mediums.3.associations.11.gid' => 'new', 'select-recording-2-2' => 'on', 'rec_mediums.3.associations.4.gid' => 'new', 'select-recording-1-10' => 'on', 'rec_mediums.1.associations.10.confirmed' => '1', 'select-recording-1-6' => 'on', 'rec_mediums.1.associations.6.gid' => 'new', 'rec_mediums.3.associations.17.confirmed' => '1', 'select-recording-3-21' => 'on', 'rec_mediums.1.associations.15.confirmed' => '1', 'rec_mediums.1.associations.11.gid' => 'new', 'rec_mediums.2.associations.13.edit_sha1' => 'UjjsnLdJBBvbELzUdsCO2VEuAXI', 'rec_mediums.1.associations.10.edit_sha1' => '/NeFg2Z+jQ8Ve+fpMNOQWc2isJg', 'select-recording-2-0' => 'on', 'rec_mediums.0.tracklist_id' => '', 'select-recording-3-4' => 'on', 'rec_mediums.2.associations.17.gid' => 'new', 'select-recording-2-21' => 'on', 'rec_mediums.3.associations.0.gid' => 'new', 'rec_mediums.2.associations.16.confirmed' => '1', 'rec_mediums.3.associations.9.gid' => 'new', 'rec_mediums.1.associations.1.confirmed' => '1', 'rec_mediums.1.associations.11.confirmed' => '1', 'select-recording-2-10' => 'on', 'rec_mediums.3.associations.22.edit_sha1' => 'kcsovVxV+vjay4AmLyBGwvDUO2A', 'rec_mediums.2.associations.15.confirmed' => '1', 'select-recording-3-13' => 'on', 'rec_mediums.3.associations.17.gid' => 'new', 'select-recording-1-14' => 'on', 'rec_mediums.1.associations.10.gid' => 'new', 'rec_mediums.3.associations.5.confirmed' => '1', 'rec_mediums.1.associations.4.edit_sha1' => 'aVIDj3mO1KBHF+wq658FO8uxcZ8', 'rec_mediums.2.associations.19.edit_sha1' => 'Rhikgv/acBuzdR47rb2ZJQMT9GM', 'select-recording-1-17' => 'on', 'rec_mediums.3.associations.25.gid' => 'new', 'rec_mediums.1.associations.17.confirmed' => '1', 'rec_mediums.1.associations.7.edit_sha1' => '+E70IgKIPrIFkfbAGHMrJdV7I18', 'rec_mediums.2.associations.21.gid' => 'new', 'rec_mediums.3.associations.22.gid' => 'new', 'rec_mediums.1.associations.12.confirmed' => '1', 'rec_mediums.2.associations.17.edit_sha1' => '1QxFZiNtGuwOIf0hrFbeetu6OCY', 'rec_mediums.3.associations.9.edit_sha1' => 's+imQ16CaAAlGI+DTsH7yTYdqbA', 'select-recording-2-7' => 'on', 'select-recording-2-17' => 'on', 'rec_mediums.1.associations.5.gid' => 'new', 'rec_mediums.2.associations.6.gid' => 'new', 'select-recording-3-18' => 'on', 'select-recording-1-11' => 'on', 'rec_mediums.3.associations.9.confirmed' => '1', 'rec_mediums.3.associations.7.edit_sha1' => 'sIAEvkRcyDFZZ5fzte9PVAUSkkE', 'select-recording-3-11' => 'on', 'rec_mediums.1.associations.17.edit_sha1' => '/nMbE0odnK76wf/7Su96mKZDjIc', 'select-recording-3-7' => 'on', 'rec_mediums.1.associations.16.confirmed' => '1', 'rec_mediums.2.associations.8.edit_sha1' => 'EitVtc+1HuxhsyAPr43mUR0LFfQ', 'rec_mediums.3.associations.21.confirmed' => '1', 'select-recording-2-14' => 'on', 'rec_mediums.2.associations.19.confirmed' => '1', 'rec_mediums.2.associations.4.edit_sha1' => '1XgL7wMF5NFPr65tw5PacWhlaXE', 'rec_mediums.2.associations.12.gid' => 'new', 'rec_mediums.3.associations.14.gid' => 'new', 'rec_mediums.3.associations.17.edit_sha1' => 'xVAjkMXWIS9IKn1/WFeA+IU/Ztg', 'select-recording-2-8' => 'on', 'rec_mediums.3.associations.6.confirmed' => '1', 'rec_mediums.1.associations.1.gid' => 'new', 'rec_mediums.3.associations.16.confirmed' => '1', 'select-recording-2-3' => 'on', 'rec_mediums.3.associations.20.edit_sha1' => 'eAS65j26dyn9PopwxHA4uyg3nU4', 'rec_mediums.2.associations.4.gid' => 'new', 'rec_mediums.1.associations.8.edit_sha1' => 'MdghLzknkuArHVK7cb1jaVjwxSg', 'rec_mediums.3.associations.16.edit_sha1' => 'jHSdYTIH6vGEnu6hNlfxt1NoOTs', 'rec_mediums.2.associations.0.gid' => 'new', 'rec_mediums.2.associations.10.gid' => 'new', 'rec_mediums.2.associations.18.confirmed' => '1', 'select-recording-1-9' => 'on', 'select-recording-3-0' => 'on', 'rec_mediums.2.tracklist_id' => '', 'select-recording-3-24' => 'on', 'rec_mediums.3.associations.11.edit_sha1' => 'RLK+3IMr+0wfi7+uxwZpYYdDgWU', 'rec_mediums.3.associations.12.gid' => 'new', 'rec_mediums.1.associations.9.gid' => 'new', 'rec_mediums.3.associations.3.gid' => 'new', 'rec_mediums.3.associations.18.gid' => 'new', 'select-recording-2-20' => 'on', 'rec_mediums.3.associations.13.gid' => 'new', 'select-recording-3-12' => 'on', 'rec_mediums.1.associations.1.edit_sha1' => 'GD77wc+DHuzumCzf3aH+FFTpGYE', 'rec_mediums.3.associations.0.confirmed' => '1', 'rec_mediums.2.associations.3.gid' => 'new', 'rec_mediums.2.associations.13.gid' => 'new', 'rec_mediums.2.associations.21.edit_sha1' => 'qSo9y/dR3ciZ5pQJEmPK5j4LWSI', 'rec_mediums.3.associations.4.confirmed' => '1', 'rec_mediums.2.associations.12.confirmed' => '1', 'rec_mediums.1.tracklist_id' => '', 'rec_mediums.2.associations.8.confirmed' => '1', 'rec_mediums.2.associations.10.confirmed' => '1', 'select-recording-1-0' => 'on', 'rec_mediums.2.associations.11.gid' => 'new', 'rec_mediums.3.associations.2.gid' => 'new', 'rec_mediums.2.associations.0.edit_sha1' => '8i6Urd3eSzcp3mwYmnuwFbLpwgc', 'rec_mediums.3.associations.24.confirmed' => '1', 'rec_mediums.1.associations.4.confirmed' => '1', 'rec_mediums.1.associations.3.edit_sha1' => 'bw2A8Z+oAXzjU27Dyx7RS1mwJKM', 'select-recording-2-12' => 'on', 'rec_mediums.2.associations.6.confirmed' => '1', 'rec_mediums.3.associations.5.edit_sha1' => 'W4rotTEzVxvLyQsVJdplHGjlnzg', 'rec_mediums.2.associations.22.confirmed' => '1', 'rec_mediums.3.associations.20.confirmed' => '1', 'select-recording-3-2' => 'on', 'rec_mediums.3.associations.2.edit_sha1' => 'YzYgthkemZ11B16zMTxu6vTb3m0', 'rec_mediums.3.associations.21.edit_sha1' => 'hdRUYB2wyuLUvGNzAjCG+vOMbFk', 'rec_mediums.1.associations.17.gid' => 'new', 'wizard_session_id' => '0.842274556795221', 'rec_mediums.3.associations.8.edit_sha1' => 'OlaBvFNny6FrUbjbOc3JxFi4JTI', 'rec_mediums.3.associations.14.confirmed' => '1', 'rec_mediums.2.associations.17.confirmed' => '1', 'select-recording-2-6' => 'on', 'rec_mediums.3.associations.15.confirmed' => '1', 'select-recording-2-13' => 'on', 'rec_mediums.3.associations.23.gid' => 'new', 'select-recording-1-16' => 'on', 'select-recording-3-17' => 'on', 'rec_mediums.1.associations.16.gid' => 'new', 'rec_mediums.1.associations.5.confirmed' => '1', 'rec_mediums.3.associations.8.confirmed' => '1', 'rec_mediums.1.associations.12.gid' => 'new', 'rec_mediums.2.associations.16.edit_sha1' => 'nY4E564EJxVMzslJcyIJ7tF9ghI', 'rec_mediums.3.associations.12.edit_sha1' => 'KnikYlDSjCHkgrD5GfQMlXWY8ro', 'rec_mediums.2.associations.13.confirmed' => '1', 'rec_mediums.2.associations.11.edit_sha1' => 'yFecxj/FL1+dv5TbDH7UUJ7eKgo', 'rec_mediums.1.associations.3.confirmed' => '1', 'rec_mediums.3.associations.19.confirmed' => '1', 'rec_mediums.2.associations.5.confirmed' => '1', 'rec_mediums.1.associations.13.gid' => 'new', 'rec_mediums.2.associations.5.gid' => 'new', 'rec_mediums.2.associations.20.confirmed' => '1', 'rec_mediums.2.associations.9.gid' => 'new', 'rec_mediums.1.associations.3.gid' => 'new', 'rec_mediums.2.associations.10.edit_sha1' => 'qGQ4MhPjGeDXThgOILdOAb0HRSw', 'rec_mediums.2.associations.14.gid' => 'new', 'rec_mediums.3.associations.12.confirmed' => '1', 'select-recording-1-4' => 'on', 'select-recording-3-6' => 'on', 'rec_mediums.3.associations.25.edit_sha1' => 'LSRZurZxnrZYTLRfJVGEamV988g', 'rec_mediums.3.associations.4.edit_sha1' => 'UWcvuzugU/cD3TuqkMJi4zChu20', 'rec_mediums.2.associations.22.gid' => 'new', 'rec_mediums.2.associations.22.edit_sha1' => 'UF1phL1iKxcAku/GDaNZ8iItD8o', 'select-recording-2-16' => 'on', 'rec_mediums.1.associations.15.edit_sha1' => 'uvO3p3x2RzW5InCdmsV5TxRXqyo', 'rec_mediums.3.associations.2.confirmed' => '1', 'rec_mediums.3.associations.15.gid' => 'new', 'select-recording-3-20' => 'on', 'rec_mediums.3.associations.24.edit_sha1' => 'ww2u0oTylTeZu2A/tDe+Dx2WWUE', 'rec_mediums.2.associations.2.gid' => 'new', 'select-recording-1-8' => 'on', 'select-recording-2-4' => 'on', 'rec_mediums.1.associations.6.edit_sha1' => 'iVS0CA3fY0CL2NpGOYYIzNIglpo', 'step_missing_entities' => 'Add Missing Entities' }

};

URL: http://musicbrainz.org/release/add?artist=2292d6f2-7541-4316-ac3a-c1f83b55adb4