I've had problems adding discs and tracks to a release. It's a 101-track release. The first time I tried to enter it, I got an error message after entering all the tracks and lost all of my work. Then I decided to enter it in chunks of 20 songs (2 discs) at a time. The first two discs worked fine. When I added to add another two, though, I got this error: Internal Server Error Oops, something went wrong! Error: Caught exception in MusicBrainz::Server::Controller::ReleaseEditor::Edit->edit "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 17 MusicBrainz::Server::Controller::ReleaseEditor::Edit line 273 MusicBrainz::Server Request data: $VAR1 = { 'query_parameters' => {}, 'body_parameters' => { 'select-recording-2-5' => 'on', 'rec_mediums.3.associations.6.gid' => 'new', 'rec_mediums.2.associations.3.edit_sha1' => '2pBTFbUUmUk8SwYaYSitS1MsnMw', 'rec_mediums.3.associations.5.gid' => 'new', 'rec_mediums.2.associations.7.confirmed' => '1', 'select-recording-3-8' => 'on', 'rec_mediums.3.associations.3.gid' => 'new', 'rec_mediums.2.associations.9.edit_sha1' => '+cAT2zTm6DLabdJ2tOw9q/vg4+w', 'select-recording-2-0' => 'on', 'rec_mediums.2.associations.2.edit_sha1' => 'rKgedeBtFq9ZPW5BINt+01y+Y8k', 'rec_mediums.0.tracklist_id' => '1138708', 'select-recording-3-4' => 'on', 'select-recording-3-5' => 'on', 'rec_mediums.3.associations.0.confirmed' => '1', 'rec_mediums.2.associations.3.gid' => 'new', 'rec_mediums.3.associations.8.gid' => 'new', 'rec_mediums.3.associations.0.gid' => 'new', 'rec_mediums.3.associations.4.confirmed' => '1', 'rec_mediums.1.tracklist_id' => '1138709', 'rec_mediums.3.associations.9.gid' => 'new', 'rec_mediums.3.associations.3.edit_sha1' => 'xvFYkTZU/N3+zYWpPznS4LwEMd0', 'rec_mediums.3.associations.1.confirmed' => '1', 'rec_mediums.2.associations.8.confirmed' => '1', 'rec_mediums.3.associations.1.edit_sha1' => '3GEDyF4z6bX8dqK7D8uPvKDKQIk', 'rec_mediums.3.associations.0.edit_sha1' => 'Qb79EXxFlG6R2ZtsfzSoZKcCzV4', 'rec_mediums.3.associations.2.gid' => 'new', 'rec_mediums.2.associations.0.edit_sha1' => '6/+3lkr8MKyvrKzChHmxrXmMqqc', 'rec_mediums.3.tracklist_id' => '', 'rec_mediums.3.associations.7.gid' => 'new', 'select-recording-3-9' => 'on', 'rec_mediums.2.associations.5.edit_sha1' => 'PfrAq01j0ZzhW2919ygQt1yFI4w', 'rec_mediums.2.associations.6.confirmed' => '1', 'rec_mediums.3.associations.5.edit_sha1' => 'Ao3GhhugBgIk0AFhSoBj5aLO6c0', 'rec_mediums.2.associations.9.confirmed' => '1', 'rec_mediums.3.associations.6.edit_sha1' => 'eK2KG21c83mEGNX2ySkg2F5/n9o', 'select-recording-3-2' => 'on', 'rec_mediums.3.associations.2.edit_sha1' => 'lYGT7wRmRq8cTFrhwfpOQ+YRsvw', 'rec_mediums.3.associations.5.confirmed' => '1', 'rec_mediums.3.associations.3.confirmed' => '1', 'select-recording-2-1' => 'on', 'wizard_session_id' => '0.914409226011063', 'rec_mediums.3.associations.8.edit_sha1' => '0rawct423Y/d/RSy4hlEFtPN9BM', 'select-recording-2-6' => 'on', 'rec_mediums.2.associations.0.confirmed' => '1', 'next' => "Next \x{bb}", 'rec_mediums.3.associations.7.confirmed' => '1', 'select-recording-2-7' => 'on', 'rec_mediums.3.associations.9.edit_sha1' => 'h+IOR/Vceh/EOWi2TPSvxn174Fo', 'rec_mediums.3.associations.8.confirmed' => '1', 'select-recording-3-3' => 'on', 'rec_mediums.2.associations.6.gid' => 'new', 'rec_mediums.2.associations.1.edit_sha1' => '+jE4OScP9t+cH2CDvgHOGxdvFfo', 'rec_mediums.3.associations.9.confirmed' => '1', 'rec_mediums.2.associations.7.gid' => 'new', 'rec_mediums.3.associations.7.edit_sha1' => 'S0xyScy+y15dzaMAkZAGfdGJvLc', 'rec_mediums.2.associations.5.confirmed' => '1', 'rec_mediums.3.associations.1.gid' => 'new', 'rec_mediums.2.associations.5.gid' => 'new', 'rec_mediums.2.associations.7.edit_sha1' => 'LNrQB0vDIp8CeFl553fudjFv/jw', 'rec_mediums.2.associations.9.gid' => 'new', 'select-recording-3-7' => 'on', 'rec_mediums.2.associations.8.edit_sha1' => 'wIf/tFEIO+c6FUDabvrh4YWURzk', 'rec_mediums.2.associations.1.confirmed' => '1', 'rec_mediums.2.associations.3.confirmed' => '1', 'rec_mediums.2.associations.6.edit_sha1' => 'O3hzBMt2V40vKeOmedh2Uk2RcJE', 'rec_mediums.2.associations.4.edit_sha1' => 'VoEseJaeX4zyB/ayLSvZSFDMxJY', 'select-recording-2-9' => 'on', 'select-recording-2-8' => 'on', 'select-recording-3-6' => 'on', 'select-recording-3-1' => 'on', 'rec_mediums.3.associations.6.confirmed' => '1', 'wizard_page_id' => '2', 'rec_mediums.2.associations.4.confirmed' => '1', 'rec_mediums.2.associations.8.gid' => 'new', 'rec_mediums.2.associations.1.gid' => 'new', 'rec_mediums.3.associations.4.edit_sha1' => '4CBc4LaTDdDcUyr/S8sWMKNuNlU', 'select-recording-2-3' => 'on', 'rec_mediums.2.associations.2.confirmed' => '1', 'rec_mediums.2.associations.4.gid' => 'new', 'rec_mediums.3.associations.2.confirmed' => '1', 'select-recording-2-2' => 'on', 'rec_mediums.2.associations.0.gid' => 'new', 'rec_mediums.3.associations.4.gid' => 'new', 'select-recording-3-0' => 'on', 'rec_mediums.2.associations.2.gid' => 'new', 'select-recording-2-4' => 'on', 'rec_mediums.2.tracklist_id' => '' } }; URL: http://musicbrainz.org/release/6901ead7-abf9-4946-a67d-b38b615edec4/edit We're terribly sorry for this problem. 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