Mac, i followed exactly what you just wrote and i still can see input from Amplitube and i know it work in my Guitar RIG 5 software and Amplitube 3 CS??? It's like signal does not pass by these VST Plug-Ins...

My only three instruments which are unMute are Realtracks and Realdrums. I want to jam with this blues-jazz riff. Here maybe it gonna help you to trouble shoot my problem:

My Mixer is now:
Bass(Green): Is Enabled and unMute = Nothing, Nothing, Nothing, Nothing
Piano(Red): Is Enabled and Mute = Nothing, Nothing, Nothing, Nothing
Drum(Green): Is Enabled and unMute = Nothing, Nothing, Nothing, Nothing
Guitar(Green): Is Enabled and unMute = Nothing, Amplitube 3, Nothing, Nothing
String(Red): Is Enabled and Mute = Nothing, Nothing, Nothing, Nothing
Melody(Red): Is Enabled and Mute = Nothing, Nothing, Nothing, Nothing
Solist(Red): Is Enabled and Mute = Nothing, Nothing, Nothing, Nothing
Thru(White): Is Disabled = Nothing, Nothing, Nothing, Nothing
Audio(White): Is Disabled = Nothing, Nothing, Nothing, Nothing
Group(White): Is Disabled = Nothing, Nothing, Nothing, Nothing

For the Amplitube: parameters are all power-on...,

Thanks for your support:)