Update: When this page was migrated to the T.E.A. in 2015, the links to Monte Cook's site were no longer valid. I have located the relevant material via the Internet Archive WayBack Machine.
Errata by the author, Monte Cook
“BoVD Questions”: The following closed thread from Monte Cook’s EZ Boards forum discusses BoVD errata (thanks to Pevisham [compiler] and Monte Cook): [via the WayBack Machine].
“BoVD FAQ”: The BoVD FAQ is available as a zipped PDF on the Wizards website: http://www.wizards.com/dnd/files/BookVileFAQ12102002.zip
New Material by Monte Cook
Vile Vermin [Giant Cockroach and Giant Maggot]: [via the WayBack Machine]
Yet More Archfiends [Geryon, Pazuzu, Rhyxali]: http://www.wizards.com/dnd/files/Archfiends.zip
Errata & Notes, by Tim Emrick
pp. 32-33, Dark Speech: See item #33 in “BoVD Questions”, and p. 2 of 'BoVD FAQ'.
p. 33, Souls as Power: See Manual of the Planes, pp. 108-109 (Hades Petitioners) about larvae.
p. 34, Vile Damage: See items #11-12, 15-16, 31 and 56 in “BoVD Questions”.
pp. 41-44, Drugs: See items #24 and 32 in “BoVD Questions”,
pp. 45-46, Material Components: See item #26 in “BoVD Questions”.
p. 48, Dark Speech: See item #33 in “BoVD Questions”, and p. 2 of 'BoVD FAQ'.
p. 48, Deformity (Eyes): See item #8 in “BoVD Questions”.
p. 48, Corrupt Spell: See item #21 in “BoVD Questions”.
p. 50, Violate Spell: See items #13 and 21 in “BoVD Questions”.
pp. 54-56, Demonologist: See item #23 in “BoVD Questions” about the Summoning Mastery ability. In the Demonologist Spell List, under 3rd Level spells, “corrupt summons” should be “distort summons” (p. 92) [item #57 in “BoVD Questions”].
pp. 56-57, Diabolist: See item #34 in “BoVD Questions”.
pp. 58-59, Disciple of Baalzebul: See item #10 in “BoVD Questions”.
p. 60, Disciple of Dispater: See item #60 in “BoVD Questions”.
pp. 60-61, Disciple of Mammon: See item #10 in “BoVD Questions”.
pp. 62-63, Disciple of Mephistopheles: See item #1 in “BoVD Questions”.
pp. 66-67, Soul Eater: See item #25 in “BoVD Questions”.
pp. 68-69, Thrall of Graz’zt: See item #27 [the second item #26] in “BoVD Questions”.
pp. 71-72, Thrall of Orcus: Delete “Characters who are not spellcasters must choose the bonus feat.” The requirements for the class include “Must be able to cast a spell of the Necromancy school.” See also items #6-7 in “BoVD Questions”.
pp. 73-75, Vermin Lord: The “pincer claws” ability (8th level) is not explained. (This problem was mentioned on “BoVD Questions” [item #5], but no definite answer was given.)
pp. 77-78, Corrupt Spells: This section states that “There are no corrupt spells with a permanent duration.” However, Consume Likeness (p. 89) and Forbidden Speech (p. 96) have “Duration: Permanent”! “BoVD Questions” (item #2) states that “Corrupt spells with a duration of “Permenent” [sic] deal their corrupt damage at the beginning of the casting.” See also items #36-37 in “BoVD Questions”, and p. 2 of 'BoVD FAQ'.
pp. 82-83, 4th-level Sorceror and Wizard Spells: “Corrupt Summons” should be “Distort Summons” (p. 92) [item #57 in “BoVD Questions”].
p. 83, Components: See items #3 and 20 in “BoVD Questions”, and p. 2 of 'BoVD FAQ'.
p. 88, Claws of the Bebelith: Gargantuan claw damage should be 2d6.
p. 94, Evil Eye: See item #29 in “BoVD Questions”.
p. 96, Graz'zt's Long Grasp: If the hand is destroyed before it returns to the caster, does the caster lose the hand permanently? Or does the hand regrow when the damage heals?
p. 98, Liquid Pain: See item #22 in “BoVD Questions”.
p. 103, Seething Eyebane: '[Evil, Acid]' should be '[Acid, Evil]'.
p. 114, Elixir of the Dark Speech: See pp. 2-3 of 'BoVD FAQ'.
p. 117, Vasharan Offal Bag: Giant cockroaches were cut from BoVD. Monte Cook has made their stats available on his website: [via the WayBack Machine]
pp. 120-121, Despoiler of Flesh: See Manual of the Planes, p. 103 (Fortress of Indifference) for more information on Tapheon.
p. 124, Lower Planes: See item #30 in “BoVD Questions”. See also Manual of the Planes for more details on the Lower Planes.
p. 161-162, Mephistopheles: See item #18 in “BoVD Questions”.
pp. 169-186, Evil Creatures: See item #30 in “BoVD Questions”.
p. 170, Mane: See Manual of the Planes, p. 100, about Abyssal Petitioners.
p. 183, Vilewight: Under “Disease”, the reference should be to p. 30 of this book.
p. 184, Bone Creature: See item #4a in “BoVD Questions”, and p. 2 of 'BoVD FAQ'.
p. 185, Corpse Creature: See item #4b in “BoVD Questions”, and p. 2 of 'BoVD FAQ'.
p. 187, Detecting Evil: See item #17 in “BoVD Questions”, and p. 3 of 'BoVD FAQ'.
Monster Indices
See Book of Vile Darkness (Monster Indices) for lists of new creatures by type and CR.