Using any terminal program that can send a reasonably large file (I used gtkterm), send something to the Due at 115200. When connected to the programming port, it echos back fine. On the native port, only short sections at the beginning and end get echoed.
java.lang.IllegalStateException: Menu has no enabled items
Any news on 1.5.2 IDE? I'm looking out for the option to upload sketches by command line.