Cant create skins (2 or 5 block down glitch)

ive been trying to use novaskinme but when i click a block the color goes two (or sometimes five) blocks down

i use chrome i earsed my history i tried everything. i can still make skins but its almost impossible to finish it

PLZ HALP MEH

hmm this is an odd one.try using an incognito window (CTRL+SHIFT+N) see if that works

it still doesnt work

its really wierd, like it just doest paint on the block im clicking on

Do you see the colored pencil cursor, or is your cursor the default arrow?

i see the penil cursor