@Aviator... Some of my classmates (even the one who won the price for best practical part) didn't got invited due to one ATPL exam under 75%. Don't know if our school chose this matter or the CAE..
@ReleasePT... Yes it has some mistakes. But those mistakes are very easy to find. I had my ATPL almost 4 years ago and while reading this book I found the mistakes myself.
This book is still the bible for assessments like Ryanair as they ask the same things. They also don't want you to go into detail, you just need to show that you know what you're talking about. Most of the mistakes in the book are detail related so don't worry. Buy the book, read it, live with it, sleep with it, make babies with it. It will get you through the technical part with no problems..