sorry I was doing test with, String::toCharArray()
it does compile without that line.
it does pot the msg, (inputString) as a tweet, just '(inputString)' not the serial data collected.
then it runs in a loop of garbage. twitter does not allow multiple post of the same information.
so it posts once then crashes.
the inputString serial data updates once every second and changes all the time (it's a geiger counter random string) like this:
CPS, 0, CPM, 3, uSv/hr, 0.0
CPS, 2, CPM, 29, uSv/hr, 0.16, SLOW
CPS, 2, CPM, 31, uSv/hr, 0