There are errors on the left front piece. I know that some people have successfully made this cardigan, presumably by following their intuition about the shaping, but the instructions for the left front shaping should read like this (changes shown in bold):
Cont from Row 2 in lattice pattern as set.
Taking new sts into pattern (except last stitch of each row (selvedge st)), inc 1 st at beg of 9th (RS) and each foll 10th row until there are 44 [48: 50: 54: 56: 60] sts.
Next row (RS), place marker: Pattern 3 sts, place marker, pattern to end. Stitch marker will show you how many stitches you have increased at underarm edge (3 so far).
Cont in pattern, increasing at beg of each 10th row until there are 7 sts to right of marker.
AT THE SAME TIME: When work meas 26.5 [26.5 : 28: 28: 29: 29] cm (10.5 [10.5: 11: 11: 11.5: 11.5 inches), start shaping left front neck (etc from pattern)
Right front neck reads: “RS facing, inc 1 st at beg of row and at same edge of next 2 rows.
Next row (RS), place marker:” (RS) should read (WS).
Also, some knitters have found the stated button size to be too small. You may wish to use a larger size.
