Logos update change error 2.0.6

When i try to update the store logo, it always shows error info in IE:

Row: 434

Char: 1

Error: ‘cscart_fileuploader’ undefined

code: 0

URL: [url]http://a-depot.com/admin.php?dispatch=site_layout.logos[/url]

I tried “local” “Server” “URL”, none worked.

I can update before, but i have no idea i can’t since when. Some update cause the error?

Please help me, thanks.