Row 5 may be a break from the multiple of 6+5 depending on the size you're making. Can you quote the entire row including the 7sts at the center of the chart or is it just too long? Where are you in the pattern (back, fronts?) Do the stitches not add up in row 5 or is it the break from the repeat that's causing problems?
There is a corrections listed online for the size directions after the cast on for the back