Upload problem,newbie here please help :)

[eluser]Sumon[/eluser]
without looking much i have few questions
1. do you create uploads folder in your root and set it write permission(0777)?
2. change function name function do_upload($file) by function do_upload(). i feel, you don't need any parameter because your form in view

Code:

<?php echo form_open_multipart('hasil_rad/do_upload');?>

which means form action = "hasil_rad/do_upload"
and let us know if the problem still exists.