Problem with Sound Max Analog Devices and AA3 when recording Internet audio

I'm having a problem recording Internet audio with Audition 3 on Windows 7 using Sound Max.

This problem began last week. Before that this combination has been working great for many years without any problems at all.

When I'm recording Internet stream I open "Stereo Mix" channel. I used to adjust the channel 2/3 open and in this point the recording level was fine and the recording used to go smoothly and the result was fine. But now when I open the ""Stereo Mix" only a tiny bit the right channel go "red level" and other channel goes almost the same level. When I play back the recording there is no audio at all but only some static noise.

I can't understand what has happened? Do I need to install AA3 or SoundMax again?

Any help would be very much appreciated.

Tony