I finally could install this map in MapSource, but still not in Basecamp. I took a gmapprom.img and with gmaptool and unlock mapset it works. I am now looking for the prob with Basecamp.

After a new try with gmaptool I am happy to say that CNE works in Basecamp aswell. It was a bit hard for me ! But I still don't understand why I could'nt use the normal way of install.