Matarilevich: I have and it doesn't let you make the move. To my oppinion, it does the right thing. I think the correct definition for a move is this:

a change in the position of one, or in a special case of castling, two, pieces on the board.

yes, passing is a kind of move but I think that's because WE call it a move. And that's because we do it in our own turn when we cannot make a legal MOVE!

So see, it's not that much of a move itself.