First of all: a random MusicBrainz user can't be expected to give a summary, to know the affected version(s) or the components.
It's great that you trust people to copy the error message, but it would be easier to give a link to a page where people can just report the error. Offering a possibility to tell more would be nice, but requiring to tell more is intimidating for no good reason.

The vomit:

---

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 269."

Stack trace:

• line 269 MusicBrainz::Server::Wizard
• line 770 MusicBrainz::Server::Wizard::ReleaseEditor
• line 94 MusicBrainz::Server::Wizard::ReleaseEditor
• line 17 MusicBrainz::Server::Controller::ReleaseEditor::Edit
• line 273 MusicBrainz::Server

Request data:

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

{ 'save' => 'Enter edit', 'wizard_page_id' => '4', 'edit_note' => 'As written on the back-cover at http://www.amazon.de/Orrori-DellAmore-Mcfadden/dp/B000025TYK Attention should be given to * "della Vita", which AFAIK is better Italian than "del Vita", because "vita" is feminine * "Du", the capitalization of second person pronouns in German is contested. I write "Du" (but don\'t trust me, I also write "gethan") Compare http://media.cdr.nl/COVER/LARGE/BACK/HFX3124.jpg at http://www.muziekweb.nl/Link/HFX3124 with http://ecx.images-amazon.com/images/I/51V%2B9Poo5mL._SS400_.jpg at http://www.amazon.de/Orrori-DellAmore-Mcfadden/dp/B000025TYK', 'id' => '454964', 'wizard_session_id' => '0.232201683871359' }

};

URL: http://musicbrainz.org/release/9f1182c5-ea25-4b32-b236-dfdb0ce36b5f/edit

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