problem solved.
it was an error in the opf-file:
I wrote:
Code:
<item href="images/img_02000008.svg" id="image_img_02000008_svg" media-type="image/svg"/>
instead of
Code:
<item href="images/img_02000008.svg" id="image_img_02000008_svg" media-type="image/svg+xml"/>
so it was just a littlle error in the media-type.
Now the SVG shows in the epub. but it seems that it makes the epub damm' slow
