1. nope
2. according to Schweser, they might be biased, 2007 has changed about 40% vs 2006, and probable 2006 has changed vs 2005
3. yes there is an errata page on the Schweser website but you need to be registered as the actual purchaser of the books to be able to login to the page, if you got your books from somebody else you cant access errata - there are quite a few errors in he books