the form tag for the form that has the file field is at line 255:
<form action= "" method="post" name="fmAddQL" id="fmAddQL">
this form tag does not have the encoding type set to multipart/form-data. is should be:
<form action= "" method="post" enctype="multipart/form-data" name="fmAddQL" id="fmAddQL">
for the upload to work, the encoding type must be set.
if it is still not working after changing the upload type, leave the redirect off, and go to the bindings panel, expand the WA Uploaded Files Global Status group and add the debug info binding to the page, also, add the following code to write the files collection, and post results back:
<?php var_dump($_FILES); ?>
NOTE: both of those should be in the page body.