Thanks tomasz, sorry if I shouted, it wasn't my intention... I'm beginner in forums use, so I'm still learning... it will no happen again About the exportation problem. I tried to save in a location I have full access to, and I tried to save it without specifying the extension. Still nothing. By the way, I'm working in Mac, I don't know if it makes any difference. I posted this question a month ago in Kerkythea forum, but I didn't get response, that's why I'm trying now here. Anyway I'll try it again. Any idea? Thanks again.