Yesss!! Solved!
The minifrontpage uses the pictures from the images folder. When I insert an image I give the full acces path for the image for example
http://www.mypage.com/images/stories/myimage.jpg I can wiev the picture int he TinyMCE or JoomlaFCK, but the MiniFrontPage can not see myimage.jpg, I think it thinks that it is an outer link. If I use only images/stories/myimage.jpg I cann'r see the picture in the editors insert window justh the outlines, but in this case it makes the thumb, and everything is fine.
Dear TP Admin, is it possible to hack the MFP that we could see the generated thumb when we give the full acces path at the editor? That would be great.
Thanks
BZ