Winforms application not receiving messages from arduino

[vramanx]

I have a sample winforms application using CmdMessenger connecting at 115200 with DtrEnable set to true. This is running on windows 10 with Arduino getting connected on COM4. The code is based on the Datalogging example

I have the below code in Setup function in the ino file. The winforms application receives the first acknowledge message. But not the second one. Any clues?

void setup()
{
// Listen on serial connection for messages from the pc
Serial.begin(115200);

// Adds newline to every command
cmdMessenger.printLfCr();

// Attach my application's user-defined callback methods
attachCommandCallbacks();

// Send the status to the PC that says the Arduino has booted
cmdMessenger.sendCmd(kAcknowledge,"Arduino has started!");

// set some pin modes
pinMode(kBlinkLed, OUTPUT);
pinMode(....)

cmdMessenger.sendCmd(kAcknowledge,"Setup Completed");
}