Update Page not Working

I have added DFP to a DA Update Page. I have followed the Video and have printed out the pdf and have checked double checked, deleted behaviours and reinserted them again, all with no luck.

The text in the form is updated, however no file is uploaded and no file name is added to the DB.

I get the following error report only;

  Status object: WA_UploadResult1
statusCode : 0
errorMessage : No file uploaded
clientFileName :
fileExtension :
serverFileName :
serverSimpleFileName :
serverDirectory :
contentType :
fileWasOverwritten :
fileWasSkipped :
fileWasRenamed :
fileSize : -1
isImage :
imageWidth : -1
imageHeight : -1
WA_UploadResult1_1:
clientFileName :
fileExtension :
serverFileName :
serverSimpleFileName :
serverDirectory :
contentType :
fileSize : -1
imageWidth : -1
imageHeight : -1
statusCode : 0
errorMessage : No file uploaded  

The page is attached below.

Thanks in advance

I see an incorrect entry in the code for the file field.

double click the upload file server behavior. On the First step, select the unit_logo form element from the File Field drop down. Do not click the lightning bolt, instead,l click the downward triangle to expand the select list and select the unit_logo element.

OK, so my update page updates if I add a file to be updated, however if I dont select a new file, it deletes the entry from the database!

I understand that I need to bind the hidden form field to the actual form field by selecting the hidden form as the default file.

When I open the wizard via the behaviour that option is always empty even though I have selected it every time!

Should the entry by the hidden field name

  [logo_upload_hidden]  

or a long string instead?

<?php echo((isset($_POST["logo_upload_hidden"]))?$_POST["logo_upload_hidden"]:"") ?>

Should it be in the DFP code?

<?php

WA_DFP_SetupUploadStatusStruct("WA_UploadResult1");

if(isset($_POST["Update_x"])){

    WA_DFP_UploadFiles("WA_UploadResult1", "unit_logo", "2", "[NewFileName]_[Increment]", "PNG:5", $WA_UploadResult1_Params);

}

?>

It should be the linger string:

<?php echo((isset($_POST["logo_upload_hidden"]))?$_POST["logo_upload_hidden"]:"") ?>

After binding the hidden form element to the default file, select the one of the other input boxes such as file name before hitting the OK button to force the change to stick.