RFID and serial LCD

Projects Programming
1

I am working on an RFID reader connected to pin 2 and 3 on Arduino UNO and It's working properly.

I want to display some information on the serial LCD. However when I added the code line below for the serial LCD.

SoftwareSerial mySerial(4,5); /code]


I got this error. Please advise. 

[code]Arduino: 1.6.4 (Mac OS X), Board: "Arduino Uno"

Build options changed, rebuilding all
error: redefinition of 'SoftwareSerial mySerial'
SoftwareSerial mySerial' previously declared here
redefinition of 'SoftwareSerial mySerial'

  This report would have more information with
  "Show verbose output during compilation"
  enabled in File > Preferences.
/code]
2

This report would have more information with

This answer would have more information IF you had posted your code.

I'll simply ask why you have two (stupidly named) instances of SoftwareSerial with the same name? You do not have ANY mySerials attached to the Arduino, do you?