AD&D 2E
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The orignal overview page was: http://www.wizards.com/default.asp?x=dnd/dnd/downloads
Title: The Complete Psionics Handbook (first printing)
First printing errata for #2117
File Format: Web page
Title: 2nd edition Dungeon Master Guide (revised) Errata
Errata Sheet for first printing
File Format: WebPage
Title: 2nd edition Player's Handbook (revised) Errata
Errata Sheet for first printing
File Format: WebPage
Title: Player's Option Rulebook: Combat & Tactics FAQ
Player's Option: Combat & Tactics Errata
File Format: WebPage
Title: Player's Option: Skills & Powers FAQ
FAQ/Errata File v. 2 for Player's Option: Skills & Powers
File Format: Web page
Title: Player's Option: Skills & Powers FAQ (second printing)
Description: Skills & Powers Errata and Clarifications effective 9 February 1996
File Format: WebPage
Title: More Errata for Player's Option: Skills & Powers (both printings)
Even more Errata
File Format: WebPage