I just recently had my first experience with an error in a free pattern. I notice that sometimes the free download patterns include a caution to check for corrections before beginning the pattern, but I've never understood where one would check. When I tried to look up this pattern again, I couldn't find it, so I wondered if they'd removed it from the internet because they realized the mistake. In this case, they'd said to cut 4 3/4" squares, and cut those diagonally both ways, but the resulting triangles were too small. The 4 3/4" was the size it needed to be finished, not before sewing. Luckily I had enough fabric to cut more triangles.