exiting (due to assertion failure)

[Turbo Fredriksson]

I get this when i try to start Bind9 v9.4.1:

----- s n i p -----
12-Jul-2007 18:54:14.278 zone 168.192.in-addr.arpa/IN: sending notifies (serial 2007071201)
12-Jul-2007 18:54:14.282 view.c:1161: REQUIRE(keyp != ((void *)0) && *keyp == ((void *)0)) failed
12-Jul-2007 18:54:14.284 exiting (due to assertion failure)
----- s n i p -----

Any idea where to start looking for the problem?