Cant get the file to upload

I have tried everything and I cant get it to work.
I have a form, this is the code:

<form action="" method="post" enctype="multipart/form-data" name="specialorder" id="specialorder">
<input name="productname" type="hidden" id="productname" value="<?php echo $row_rsProducts['ProductName']; ?>" />
<label></label>
<label>
<span class="prodname">Price Quote for <?php echo $row_rsProducts['ProductName']; ?></span><br />
<br />
<br />
First Name<br />
<input type="text" name="first" id="first" tabindex="1" />
<br />
<br />
Last Name
<br />
<input type="text" name="last" id="last" tabindex="2" />
<br />
<br />
<br />
E-Mail Address<br />
<input type="text" name="email" id="email" tabindex="3" />
<br />
<br />
Phone<br />
<input type="text" name="phone" id="phone" tabindex="4" />
<br />
</label>
<p>
<label>
Quantity<br />
<input type="text" name="quantity" id="quantity" tabindex="5" />
<br />
</label>
</p>
<p>
<label>Artwork Upload <br />
<input type="file" name="artwork" id="artwork" tabindex="6" />
</label>
<br />
<label></label>
</p>
<p>
<label>
Options / Instructions
<br />
<textarea name="instructions" id="instructions" cols="30" rows="5" tabindex="7"></textarea>
<br />
</label>
</p>
<p>
<label>
<input type="submit" name="button" id="button" value="Submit for Price Quote" />
</label>
</p>
<p>status:<?php echo $WA_DFP_UploadStatus["WA_UploadResult1"]["statusCode"]; ?></p>
<p>Error Message:<?php echo $WA_DFP_UploadStatus["WA_UploadResult1"]["errorMessage"]; ?></p>
<p>Client File Name:<?php echo $WA_DFP_UploadStatus["WA_UploadResult1"]["clientFileName"]; ?></p>
<p>Upload Folder:<?php echo $WA_DFP_UploadStatus["WA_UploadResult1"]["uploadFolder"]; ?></p>
<p>Debug Info:<?php echo WA_DFP_UploadStatusItem_debug("WA_UploadResult1"); ?></p>
</form>


Here is the code for the upload:

<?php
WA_DFP_SetupUploadStatusStruct("WA_UploadResult1");
if(isset($_POST["button"])){
WA_DFP_UploadFile("WA_UploadResult1", "artwork", "", "client_art", "[FileName]", "0", "[FileName]_[Increment]", "1000", "false", "0", "0");
}
?>


And this is the result on the page... I am redirecting to the same page... using Universal e-mail to send a copy of the uploaded file as an attachment.

The email goes through, but with no attachment, and the file is not being uploaded to the folder called client_art. Here is the error code on the resulting page:

THis at the very top of the page:

Notice: Undefined index: artwork in /var/www/html/WA_DigitalFilePro/HelperPHP.php on line 47

This in the debugging code section:

status:0

Error Message:No file uploaded

Client File Name:

Upload Folder:
Notice: Undefined index: uploadFolder in /var/www/html/details.php on line 1510

Debug Info:Status object: WA_UploadResult1
statusCode : 0
errorMessage : No file uploaded
clientFileName :
fileExtension :
serverFileName :
serverDirectory :
contentType :
fileWasOverwritten :
fileWasSkipped :
fileWasRenamed :
fileSize : -1
isImage :
imageWidth : -1
imageHeight : -1



HERE is line 47 of the Helper.php file:

$uploadedFile = $_FILES[$fileField];


At this for HOURS. Can you please help?
Thanks