WordPress MU

I'm getting this autoupdate failure. I tried searching, but nothing related is coming up.

Warning: copy(/home/test/public_html/wp-content/upgrade/wordpress-mu-2.8.3/wordpress/wp-admin/includes/update-core.php) [function.copy]: failed to open stream: No such file or directory in /home/test/public_html/wp-admin/includes/class-wp-filesystem-direct.php on line 131

Do a search before posting.

http://www.google.com/search?sitesearch=mu.wordpress.org&q=2.8.2+-%3E+2.8.3+auto+update

Thank you the link..One of our client was also facing the same issue ..

Your post Help me.