As it's human to err and sadly I am a human... the FKG contains some minor mistakes (as all books do). :( Anyway, so far I've only noticed two instances that perhaps should be mentioned to avoid confusing the reader...
On page 11, the blackened text should be moved down to a2) like this: By the way, if you ever consider writing a chess book, you should be aware that chessbase exports commented games as compact as possible - so the more detailed your analysis, the more enervating will your layout editing become...
On page 150, " like this:


b) 14...e3" should be in bold


Created on ... September 30th, 2005