Thank's gails, I realy appreciate your input. I did every thing that was suggest but, I'm still at the same point. Guit Rig4 doesn't appear on X3 and it's still there in my X1 so, maybe, if I realy want to experiment a sound with Guitar Rig4, I'll bring the wave in X 1, save and bring the track processed back in X3...but, I'm sure it's in the VST scan that I missed some thing and I'm afraid to screw up every thing if I experiment on that.
So, any more information would be appreciate.
Thank you very much!!!