Serial object Stand alone problem

Hi
running standalone on Mountain Lion ( fresh Install + ftdi drivers )

I have a simple serial object that reads an arduino.
it worked fine with max 6.0
now my stand alone made with max 6.1 does not pickup any serial data
when I open the max file with maxmsp it works.

If I open arduino serial box I can see the serial comming also same result with Coolterm

hope you guys can give me some advice how to fix this problem