Instruct: Classify the given Amazon review as either positive or negative.
Query: Very frustrated with this book and its missing files

I was extremely frustrated with this book when I sat down to use it, inserted the CD-ROM, and, after some time, realized that very important files were missing (including an index page that other pages supposedly linked to). Not only that, there was nothing indicating any kind of support on the publisher's web site! I can understand publishers being in a hurry to get these books out to the public in a timely manner, but when the whole point is having a CD to work with, this kind of sloppiness is unforgivable. I will even admit that if I'd had a place to vent to the publisher I might not be writing this review here.