Yer, I've just update my workbench to HD - now my 12 strings guitars aren't able to change the semitones of the individual strings. I was doing an octave LOWER on the low E and A - giving me a bass sound on those 2 notes, good for the music I play, but the new workbench HD won't let me do this!!! Sucks big time.....likely will have to go back to the old workbench, I guess.....