There is currently a limit of 26 serial ports in the serial object. I could look into removing this limit (and coming up with some naming scheme for ports > 'z') for a future version of the object, but this is not likely to happen in the next couple of weeks.

I will try to determine the cause of the crash (probably related to some assumption I've made that no one would ever have more than 26 ports) and get it fixed for the next release, though.

jb