Hi fat16lib,
I'm bit lost, not sure to understand your last post, have you found a fix or would it better waiting for another IDE release or fix directly from arduino team ?
In my case where I'm porting a big arduino mega project into arduino due, i need to use different Serial functions, not only Serial.begin(baud_rate), Serial.available() and Serial.read() but also functions like Serial.write() and Serial.flush()
Thank you in advance, Albert