Not exactly a Spell or Grammar error, but still I think it belongs here: in the potioning quest you get this message, in bold the wrong part
Portia: You mastered that potion. Will you try the will potion next? For this one you will need to read "Book of potion of Will". Acelon, FFS, use escape chars around quote marks You will also need 1 empty vial, 3 bones powders, 2 silver ores and 1 yellow rose. Yellow roses are quite rare.. fortunately you can find some in Corren, Desert Pines. As you can tell every potion needs a vial so I wont remind you from now on.
Just a note, this error is still around.