Blynk Arduino ethernet lib version

Hi,
I found strange behaviour concerning Ethernet lib (5100).
Previos I came from CAyenne and have installed now both BLYNK (04.10) and CAYENNE (1.02) libs (Cayenne includes Blynk libs…). haveing both installed parallel the compiler gives some wanings. So I deleted the CAYENNE one. Now the Arduino crashes all the time when I press a button on the app. (indicating by reboot showing the 0.4.10 logo on serial output, so I know the 0.4.10 was used)
copying the CAYENNE back to lib folder it works again.
Has anybody an explanation ?

Use one or the other, not both, on a clean installation of the IDE. (Hint, Cayenne is just a poor clone of Blynk :wink: )

I set up a clean installation but with BLYNK my Arduino resets all time after I press a button !
grafik

here some snaps…

void setup()
{
  // Debug console
  Serial.begin(57600);   // IF no PC
  Serial1.begin(9600);   // IF to external
  pinMode(SDCARD_CS, OUTPUT);
  digitalWrite(SDCARD_CS, HIGH); // Deselect the SD card

  Blynk.begin(auth);
  timer.setInterval(800,DelButton);
}
//******************************************************
BLYNK_WRITE(VIRTUAL_PIN_V5)  // PRESS BUTTON
{
  int currentValue = param.asInt();
    if (lock == 20){
      if (currentValue ==1){
        Serial.println("BUTTON pressed");
        RS232_tx_bin(room, 5, 53 ); 
        delay(500);
      }
    }
}

did some investigations: The route cause seems to be the LCDwidget- if I remove it from the code its OK …
Any advice here ?