The Red Gate publishing dept has gone through the kindle version of this book to look for problems with links and formatting - the eBook was removed from being sold while this was investigated.
Unfortunately we found quite a few errors, in links in particular. While we were not happy to find problems, once they were identified it means that we were then able to fix the errors within the eBook.
The new version was uploaded to Amazon in the beginning of July. If anyone has a receipt for the old version from the brief period it was sold in November, please post it in the discussion and we'll be in contact to get you the new version.