Java Security

Hello,

I'm trying to compile and run a tutorial using PKCS11 for tokens. Here's the code I'm using

import iaik.pkcs.pkcs11.Module;
import iaik.pkcs.pkcs11.Slot;
import iaik.pkcs.pkcs11.Token;
import iaik.pkcs.pkcs11.TokenException;
import iaik.pkcs.pkcs11.TokenInfo;

import java.io.IOException;
import java.util.logging.Level;
import java.util.logging.Logger;

/*
 ################################################################################
 ## Special License Rights - Contract #
 ## WARNING: Do not use, modify or deliver without written permission
 ## from Harris Corporation
 ################################################################################
 /*******************************************************************************
 * FILE: SmartCardTutorial.java
 *
 * Copyright (C) 2011 Harris Corporation. All rights reserved.
 *
 * CLASSIFICATION: Unclassified
 *
 *******************************************************************************/

/**
 * 
 * @author <a href="mailto:kjones34@harris.com">kjones34</a>
 */
public class SmartCardTutorial
{
   private Module pkcs11Module;
   public static String DLL = "C:\\Windows\\system32\\acpkcs211.dll";

   public SmartCardTutorial(String librarayPath)
   {
      try
      {
         pkcs11Module = Module.getInstance(librarayPath);
         pkcs11Module.initialize(null);
      }
      catch (IOException ex)
      {
         Logger.getLogger(SmartCardTutorial.class.getName()).log(Level.SEVERE,
                                                                 null,
                                                                 ex);
      }
      catch (TokenException ex)
      {
         Logger.getLogger(SmartCardTutorial.class.getName()).log(Level.SEVERE,
                                                                 null,
                                                                 ex);
      }
   }

   public Slot[] getTokenSlots()
      throws TokenException
   {
      return pkcs11Module.getSlotList(Module.SlotRequirement.TOKEN_PRESENT);
   }

   public void printTokenInfos()
      throws TokenException
   {
      Slot[] slots = getTokenSlots();
      if (slots.length == 0)
      { // No tokens connected
         System.out.println("Sorry, Couldn't find any token");
      }
      else
      {
         // Let's get the first slot
         Slot selectedSlot = slots[0];
         // Let's get the connected token
         Token token = selectedSlot.getToken();
         // Get the token infos
         TokenInfo tokenInfo = token.getTokenInfo();
         System.out.println("Token : " + tokenInfo.getLabel());
         System.out.println("Vendor : " + tokenInfo.getManufacturerID());
         System.out.println("Serial Number : " + tokenInfo.getSerialNumber());
      }
   }

   /**
    * @param args
    */
   public static void main(String[] args)
   {
      SmartCardTutorial sct = new SmartCardTutorial(DLL);
      try
      {
         sct.printTokenInfos();
      }
      catch (TokenException e)
      {
         // TODO Auto-generated catch block
         e.printStackTrace();
      }

   }

}

and here's the error I get:

Jun 22, 2011 3:35:21 PM SmartCardTutorial <init>
SEVERE: null
java.io.IOException: %1 is not a valid Win32 application.
C:\Windows\system32\acpkcs211.dll
	at iaik.pkcs.pkcs11.wrapper.PKCS11Implementation.connect(Native Method)
	at iaik.pkcs.pkcs11.wrapper.PKCS11Implementation.<init>(PKCS11Implementation.java:166)
	at iaik.pkcs.pkcs11.wrapper.PKCS11Connector.connectToPKCS11Module(PKCS11Connector.java:75)
	at iaik.pkcs.pkcs11.Module.getInstance(Module.java:202)
	at SmartCardTutorial.<init>(SmartCardTutorial.java:39)
	at SmartCardTutorial.main(SmartCardTutorial.java:89)
Exception in thread "main" java.lang.NullPointerException
	at SmartCardTutorial.getTokenSlots(SmartCardTutorial.java:59)
	at SmartCardTutorial.printTokenInfos(SmartCardTutorial.java:65)
	at SmartCardTutorial.main(SmartCardTutorial.java:92)

I'm not familiar with this error and I'm not sure where to start looking to fix the problem.
Has anyone encountered this before?