dm4hire
Explorer
Actually probably not a major error per se. Shanna has posted on www.ninthworldhub.com on this and here is the rest of the sentence.
"If you have a d10 (a ten-sided die), you can use it instead of the d20 to roll numbers between 1 and 100."
True, and she has confirmed that is is a flaw in the PDF only and not in the actual book, which is good.