Error with setting the sound in C# program

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C#

This program will run on the computer I wrote it on, but will not run on other computers. The error that comes up on other computers is when the sound is set, which is a call to the dll. Any help would be greatly appreciated!

Here is the code from the program:

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.IO;
using Microsoft.DirectX.DirectSound;
using System.Media;
using WaveRecorder;
using System.Windows;

namespace SpellingBee
{

    public partial class AddQuizForm : Form
    {
 //Sound devices
        //Sound reference http://aaronamberman.com/tutorials/csaudio.php
        private SoundCapture sndCapt;
        private SoundDevices sndDevice;
        private Playback playBack;
        private bool isRecording = false;
        }
private void setSound()
        {
            //int sampling = 96000;
            //short bitSample = 16;
            //short chnls = 2;
            try
            {
                //Set and reset devices
                sndDevice = new SoundDevices(this);
                sndCapt = new SoundCapture(96000);
                sndCapt.OnWavComplete += new SoundCapture.Complete(sndCapt_OnWavComplete);
                
                //sndCapt = new SoundCapture(SoundCapture._96000_HZ, SoundCapture._16_Bit, SoundCapture._STEREO);
            }
            catch (Exception ex)
            {
                MessageBox.Show(String.Concat(ex.StackTrace, ex.Message));
                if (ex.InnerException != null)
                {
                    MessageBox.Show("Sound could not be set at setSound()" + Environment.NewLine +
                        String.Concat(ex.InnerException.StackTrace, ex.InnerException.Message));
                }
            }
        }

This is the code from the dll:

public SoundCapture(int samplingRate)
        {
            if (samplingRate < 11025) samplingRate = 11025;
            else if (samplingRate > 11025 && samplingRate < 22050) samplingRate = 22050;
            else if (samplingRate > 22050 && samplingRate < 44100) samplingRate = 44100;
            else if (samplingRate > 44100 && samplingRate < 96000) samplingRate = 96000;
            else if (samplingRate > 96000) samplingRate = 96000;

            wvFrmt = new WaveFormat();
            wvFrmt.SamplesPerSecond = samplingRate;

            if (samplingRate <= 22050) wvFrmt.BitsPerSample = 8;
            else if (samplingRate >= 44100) wvFrmt.BitsPerSample = 16;

            if (samplingRate <= 22050) wvFrmt.Channels = 1;
            else if (samplingRate >= 44100) wvFrmt.Channels = 2;

            wvFrmt.FormatTag = WaveFormatTag.Pcm;

            wvFrmt.BlockAlign = (short)(wvFrmt.Channels * (wvFrmt.BitsPerSample / 8));
            wvFrmt.AverageBytesPerSecond = wvFrmt.SamplesPerSecond * wvFrmt.BlockAlign;

            cpturBffrDesc = new CaptureBufferDescription();
            cpturBffrDesc.BufferBytes = wvFrmt.AverageBytesPerSecond;
            cpturBffrDesc.ControlEffects = false;
            cpturBffrDesc.Format = wvFrmt;
            cpturBffrDesc.WaveMapped = true;

            cptur = new Capture();

            cptrBffr = new CaptureBuffer(cpturBffrDesc, cptur);//This is where the 2nd part of the error is listed

            rawSoundData = new List<byte[]>();

            SetCaptureNotifications();

I have run the msi file on the computer I created this with and it runs fine, other computers have same os and everything but won't run?