A long time ago..when I first got bitten by this bug,I had bought a book and began cutting all the pieces....then I began putting a block together...one of the triangles just didn't fit...I checked, I had cut as directed...error in print..I called publisher...apologies, thanks for "finding" the error and proceeded to send me a book of my choice....good thing I had extra fabric to recut the errant piece correctly...two lessons learned: always do a sample block, and always get just a smidge more fabric....