Hi, i want to make a DVD since the last 2 days

first, there was a problem with the invisible menu font ( http://www.kdenlive.org/forum/dvd-wizard-menu-not-view )
i installed the newest svn version from the ppa and this problem is gone, but there is another problem

the dvd contains 14 clips, they are all playable, but i can only choose 1-11 in the menu, 12-14 are not selectable

screenshot
http://schiwi.ath.cx/dvd1.png
xml file:
http://schiwi.ath.cx/dvdauthor.xml
KDVD file
http://schiwi.ath.cx/dvd.kdvd

the DVD Wizard is a great program, its exactly what i searched for. but these little bugs are very annoying, can you help me?