Waow, the thread goes its way far beyond my understanding. It often goes like this,you throw a stone in the water and the circles go and go..
In my case ,as it has been confirmed,it is a matter of plug-in struggling one against the other.
The main character in the pitch is Rx5 which is the ultimate tool when you track things like miked acoustic guitars but it must have been coded in too a modern manner for my old set-up.
Anyway I'm confident that an update ( from Izotope or from Cakewalk) will allow all thoose tools to work side by side.
Alexey,good luck. I do use quite a lot Voxengo's plugs ( which are in the loop with my issues but I like to work with theese tools) and I heard the y are managed by an Alexey...
Dan, i must admit that I am not always careful with plugs and the fact is that some stuff are not secure,for me it is a trial and errors process.
Noel,thanks again for the job done and for taking time to give a hand. I do believe that the pleasure I and other people have to work with Sonar is due to the people who are working backstage.
All the best.
Olivier.