I suggest taking the approach of reducing to a 2.0 system before anything else. Get get Dirac working there first, then build it back up again.
Dear Wayne,
you were pointing out in the right direction. :clap:My ht system is 5.1 and Rotel downsamples the 7.1 channels from hdmi into my 5.1 configuration.
Minidsp tech support asked me to select , in page 1 of Dirac live cal. tool with the button "Choose system configuration", 5.1 channels instead of what the user manual tells at the page 22. See attached file
BELIEVE IT OR NOT,

I have saved my first project!!!:yikes::yikes::clap::clap:
It is a little bit scaring what happened to me because, following the instructions, I was in a situation where I risked to seriously dammaged either one of my speaker or, worst, my ear.
Now, I must to learn to use the target curve. The first attempt is so so but this is a matter of taste, experiments etc.
I have 2 questions:
1- Is the 5.1 channels setting for the system configuration solution make 2 tracks missing when playingback through nanoavr a movie sound track of 7.1 channels?
2- During the measurements procedure, we hit the start button to begin one round of sweet. Is ther a way to get a delay to give the time to go out the room? In rew we have that. In Dirac, as soon as I hit start, the first left front sweep begins quite immediatly. I am often in the line between the speaker and the mic at this moment?
Thank all for your time and help.
I will take the time to try and listen and will do comments later.