Hi Our KDE address book database driver (main/connectivity/source/drivers/kab) only supports the KDE 3.2 - 3.6 address book API, not the more recent 4 and 5 which apparently use DBUS instead.
KDE 4 has been out since 2008, so the KDE address book hasn't been working for KDE users for the past 9 years anyway. LibreOffice has apparently also dropped it. It would also make porting connectivity to gbuild much easier, as the only way to test it, is to use KDE 3 to build AOO... Let's get rid of it? Damjan