The serverlog on totoro has tons of these error messages:

Dec 9 18:34:13 totoro postgres[13246]: [8-1] ERROR: function musicbrainz_unaccent(text) does not exist at character 36
Dec 9 18:34:13 totoro postgres[13246]: [8-2] HINT: No function matches the given name and argument types. You might need to add explicit type casts.
Dec 9 18:34:13 totoro postgres[13246]: [8-3] QUERY: SELECT regexp_replace(upper(substr(musicbrainz_unaccent(txt::text), 1, 6)), '[^A-Z ]', '_', 'g')
Dec 9 18:34:13 totoro postgres[13246]: [8-4] CONTEXT: PL/pgSQL function "page_index" line 7 at assignment