I can't see the knobs of the channel strip

Hi,

I found the panel of my channel strip is disappeared, there is nothing shown in the work area.
The knobs are gone, I cant’ neither see it nor twist it at all.
Does anyone has seen the same problem before?

Here’s the pic:
http://i.imgur.com/w2AMnZa.png

Hi,

Can you see the Channel Strip controls in the MixConsole?

Probably Reset if Preferences will be needed.