Arduino Micro with Visual Basic

I can receive a serial message from a micro through two different leads to the Arduino IDE serial handler quite satisfactorily but when I use Visual Basic the reply does not trigger the received data handler.

The same VB program (using the same sketch as the micro) works perfectly with two different Unos.

Any ideas?

Rgds,

Neil.

One adds extra whitespace?

I doubt it.

Some time in the next few days I will try a different micro.

Rgds,

Neil.

The Problem is, that Micro does not send any Data if DTR is false

SerialPort1.DtrEnable = True

Happy hacking !