CodeIgniter + plupload for file uploading

[eluser]murphybr[/eluser]
I am trying to understand and use a basic widget from the examples Custom Upload
(using CI 2.x)
I have pasted my View:

Code:

Javascript paths for the following(plupload.full.js, jquery-1.6.1.min.js,jquery.plupload.queu.js)


<div id="container">
    <div id="filelist"></div>
    <br />
    <a id="pickfiles" href="#">[Select files]</a>
    <a id="uploadfiles" href="#">[Upload files]</a>
</div>

<s.c.r.i.p.t t.y.p.e="t.e.x.t./.j.a.v.a.s.c.r.i.p.t">
// Convert divs to queue widgets when the DOM is ready
$(function() {
    // Setup html5 version
    $("#html5_uploader").pluploadQueue({
        // General settings
        runtimes : 'html5',
        url : 'FilesTransfer.php/do_upload',
        max_file_size : '2048mb',
        chunk_size : '100mb',
        unique_names : true,
    });

    // Setup html4 version
    $("#html4_uploader").pluploadQueue({
        // General settings
        runtimes : 'html4',
        url : 'FilesTransfer.php/do_upload'
    });
    
    var uploader = new plupload.Uploader({
        runtimes : 'gears,html5,flash,silverlight,browserplus',
        browse_button : 'pickfiles',
        container : 'container',
        max_file_size : '10mb',
        url : 'FileTransfer.php/do_upload',
    });

    uploader.bind('Init', function(up, params) {
        $('#filelist').html("<div>Current runtime: " + params.runtime + "</div>");
    });

    $('#uploadfiles').click(function(e) {
        uploader.start();
        e.preventDefault();
    });

    uploader.init();

    uploader.bind('FilesAdded', function(up, files) {
        $.each(files, function(i, file) {
            $('#filelist').append(
                '<div id="' + file.id + '">' +
                file.name + ' (' + plupload.formatSize(file.size) + ') <b></b>' +
            '</div>');
        });
    
        up.refresh(); // Reposition Flash/Silverlight
    });

    uploader.bind('UploadProgress', function(up, file) {
        $('#' + file.id + " b").html(file.percent + "%");
   });

    uploader.bind('Error', function(up, err) {
        $('#filelist').append("<div>Error: " + err.code +
            ", Message: " + err.message +
            (err.file ? ", File: " + err.file.name : "") +
            "</div>"
        );

        up.refresh(); // Reposition Flash/Silverlight
    });

    uploader.bind('FileUploaded', function(up, file) {
        $('#' + file.id + " b").html("100%");
    });
});
</.s.c.r.i.p.t>
&lt;/body&gt;

my Controller is as follows:

Code:

function do_upload()
    {
        ini_set('upload_max_filesize', '2000M');  
        ini_set('post_max_size', '2000M');  
        ini_set('max_input_time', 900);  
        ini_set('max_execution_time', 900);  
  
        $user = $_SESSION['userName'];
        $DS = DIRECTORY_SEPARATOR;
        $this->user_upload_path = APPPATH.'../../upload'.$DS.$_SESSION['profilepath'].$DS.$this->userFolder.$DS;

        $config['upload_path'] = $this->user_upload_path;
        $config['allowed_types'] = '*';
        $config['max_size']    = '0';
        $config['max_width']  = '0';
        $config['max_height']  = '0';

        $data['title'] = "Transfer Upload";
        $data['heading'] = "File Transfer";
        $data['subHeading'] = "Upload Page";
        
        $error = array();

        $this->load->library('upload', $config);
        $this->header(1,$data);
        
        if ($_SESSION['profilepath'] != NULL)
        {

            if (!is_dir($this->user_upload_path))
            {
                mkdir($this->user_upload_path);
            }
            
            $data = array('upload_data' => $this->upload->data());
            
            if ((! $this->upload->do_upload()) && ($data['upload_data']['file_name'] != NULL))
            {
                $data = array('upload_data' => $this->upload->data());
                $file = $data['upload_data']['file_name']; // file name for logging
                $error = array('error' => $this->upload->display_errors());
                $this->load->view('upload_fail', $error);
            }
            if ((! $this->upload->do_upload()) && ($data['upload_data']['file_name'] == NULL))
            {
                $data = array('upload_data' => $this->upload->data());
                $file = $data['upload_data']['file_name']; // file name for logging
                $this->load->view('upload');
            }
            else
            {
                $data = array('upload_data' => $this->upload->data());
                $file = $data['upload_data']['file_name']; // file name for logging
                $message = $user.' uploaded file '.$file .' to the upload share.';
                $this->load->view('upload_success', $data);
            }
            $this->footer();
        }
        else {
          $this->load->view('noProfilePath');
          $this->footer();
        }
    }

could someone help direct me on what I am doing wrong.

my view (in Firefox)shows that the current runtime is:html5 then shows the 2 links (select file) and (upload file)

select file shows the file selected under the current runtime display.
but when i click upload file i get the following error:

Current runtime: html5
empty file.txt (1 b)
Error: -200, Message: HTTP Error., File: empty file.txt

Also if i try to upload a file that is 1GB, i get the -600 error.

on IE, the Select File and Upload File links dont work at all.

With IE, is there anyway to get chunking to work for plupload while using CI?