Hi,
$uploader->GetUploadedFile($fileguid); is for getting temp file. xxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxxx.filename.ext.resx
If you use SaveDirectory , the temp file will move to destination folder, and uploader will not able to maintain it again.
So if you use any way to move the temp file , you need maintain the list by your way , but not GetUploadedFile
Regards,
Terry