Unfortunately, I've already found a few errors, most of them being things I failed to catch while proofreading my and Rob's work:
p. 3, U'Rahn: Change "cast-0ffs" to "cast-o
p. 4, Chapter II, The Priesthood of Yig: In the introductory paragraph, "there power" should be "their power".
p. 9, Lord Researcher Edwina Lilybridge: Add "8, Will +11" to the end of her incomplete Saving Throws entry.
p. 11, Turk Silverskin: Press Ganger is a new feat from the True20 Freeport Companion. Insert "†" after the feat name; the stat block already has the proper footnote.
p. 19, Chapter VIII: The Obsidian Brotherhood: In the first paragraph, "they through" should be "they threw".
p. 20, Xyrades, Leader of the Obsidian Brotherhood: Instead of using two "†True20 Freeport Companion" footnotes, simply put a single one at the end of the stat block (as with Turk Silverskin,p. 11).
p. 20, Gallus Vickers: Under Unnatural Aura, "sense of the" should be "sense the".
p. 21, Hobson, The Silver Shrike: Change "him the Shrikes" to "the Shrikes".
p. 21, Joseph "Blackjack" Simonen: Move the "†True20 Freeport Companion" footnote to the end of the stat block, for consistency with Turk Silverskin (p. 11) and the note to Xyrades (p. 20).
I've also archived these comments on my Errata & Notes site at: http://timsrpgerrata.wikispaces.com/Cul ... nhancement