[Typo3] photobook correct path

[dg]

hi typo3 users !

i´ve insalled the ext. photobook, configured and as
plugin inserted in my page. but the pics are shown only
angezeigt, if I write the path directly in the template - the input of path
on the pages with the plugin will be deletet anytime he i save this. eg.
fileadmin/3dvisu/
but the same path in template setup gives the correct
result to me !
Can anyone help me with this path problem?