To remove validation, in the Server Behaviors list, select the Server Validation server behavior and click the Minus button to remove it.
To trouble shoot the upload, change line 25 in the WAUE_test1_1.php file:
$WA_MailObject = WAUE_AddAttachment($WA_MailObject,"".$WA_DFP_UploadStatus["WA_UploadResult1"]["serverDirectory"] ."".$WA_DFP_UploadStatus["WA_UploadResult1"]["serverFileName"] ."");
to:
die("".$WA_DFP_UploadStatus["WA_UploadResult1"]["serverDirectory"] ."".$WA_DFP_UploadStatus["WA_UploadResult1"]["serverFileName"] ."");
$WA_MailObject = WAUE_AddAttachment($WA_MailObject,"".$WA_DFP_UploadStatus["WA_UploadResult1"]["serverDirectory"] ."".$WA_DFP_UploadStatus["WA_UploadResult1"]["serverFileName"] ."");