Translated parent issue breaks translation of book nodes

Hello,

the solution described in http://drupal.org/node/475550 works if you translate child pages of a book. But it causes problems when a node will be translated which is set to be automatically a book node. Then the newly created translation will not become a book (base) node but will rather be put into another one of the books as a child.
I found out that changing line 381 in book_made_simple.module from
if (isset($parentPage)) {
to
if (isset($parentPage) && $parentPage > 0) {
will fix this. Maybe this can be tested and be put into the next release...?