here is a troubleshhoting tip...
on the insert page, change line...
$WA_redirectURL = "tblsuccess_results.php";
$WA_redirectURL = "";
so that the page will not redirect.
then go the the bindings panel and expand the WA Digital File pro Global Status group, add the debug info binding to the page.
Please post back the debug info results after trying to upload a file.
this should indicate what is going wrong, and maybe someone can help a bit further