Vector_18 error using Conceptinetics DMX library and WiFi Shield libraries

I am trying to implement a project using the following boards;

UNO
WiFi Shield
DMX Shield

To illustrate the point, I've literally just included the headers;

#include <SPI.h>
#include <WiFi.h>
#include <WiFiUdp.h>
#include <Conceptinetics.h>

void setup() {
  // put your setup code here, to run once:

}

void loop() {
  // put your main code here, to run repeatedly:

}

and I get the following error;

Arduino: 1.5.8 (Windows 8), Board: "Arduino Uno"

C:\Users\ROB_F_~1\AppData\Local\Temp\build9166797235309305221.tmp/core.a(HardwareSerial0.cpp.o): In function `Print':
C:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino/HardwareSerial0.cpp:48: multiple definition of `__vector_18'
Conceptinetics\Conceptinetics.cpp.o:C:\Users\rob_f_000\Documents\Arduino\libraries\Conceptinetics/Conceptinetics.cpp:1163: first defined here
collect2: error: ld returned 1 exit status
Error compiling.

It seems there is a clash of some sort, a little beyond my experience. Can anyone help with a solution?

Hello Arduino Community,

i have the same problem with my Conceptinetics DMX Shield.

I have to control it via Ethernet, USB or RS232 but none of this ways works,
because the Serial Pins 0 & 1 are blocked the conceptinetics.h or conceptinetics.cpp.

I´ve found in the Conceptinetics.cpp at line 109 to 153 that there is a possibility
to switch the dmx_serial to serial 1, 2 or 3 but i have no idea how this could work.

I have a mega 2560 board so there should be no problem by using these pins.

Perhaps here is somebody who can tell me how to switch to these serial pins.

i have tried to use the serial 1-3 for rs232 communication but it is blocked by the Conceptinetics.h

I´m trying now for over a week, so i´ll be happy about any idea how to solve the problem.

Greetings

FWBF