Well that is a real bummer Jon. I just ordered two STM2 from my LHS. I am really surprised by this given that the 2500s work so well with Legacy (i.e. Not requiring any additional hardware other than the data driver). I assumed the STM2s would work and we all know the danger in assuming. I really hope Lionel will support the 2500s in the future as I intended to use my iPad for my control panel.
thanks
kevin