I am led to believe the Canadian is full of merde. I emailed him, and never ever got a response on when he would send it out.
I did take it to the local repair center yesterday, it froze on the way and the tech got to see it. He thinks it is possibly a bug in the firmware that reacts when the panel gets hot. If I remove the touch screen and leave it in the footwell, it does not do it. So it appears to go south when it is on the radio and in direct sunlight.
Here in Texas it is hot during the day, but the tech said even with the heat it should work, and has seen similar instances in the past with units. As soon as I find anything useful out, I shall let you know.
Where in France are you, I was in Chalon Sur Saone for a month or so on business a few years back.