[avahi] program keeps crashing on avahi_entry_group_add_service_strlst()

[ecforu]

I am writing a c program using the avahi api.  Below is the code that is
generating the error.

   owner->_client = avahi_client_new(avahi_threaded_poll_get(owner->_poll),
AVAHI_CLIENT_NO_FAIL, ClientCallback, owner, &error);
   AvahiEntryGroup * group = avahi_entry_group_new(owner->_client,
EntryGroupCallback, owner);
   if (!group)
   {
      fprintf(stderr, "avahi_entry_group_new() failed: %s\n",
            avahi_strerror(avahi_client_errno(owner->_client)));
   }
   else
   {
         ret = avahi_entry_group_add_service_strlst(group, AVAHI_IF_UNSPEC,
               AVAHI_PROTO_UNSPEC, 0, serviceName, regType, domain, host,
port, txt);
   }

When I step through the last call in my program is
avahi_entry_group_add_service_strlst.  Then I get the following stack dump
from dbus.  I have also see this happen from the avahi_entry_group_new call
above.  But if it makes it passed this one, it dies on the next one with the
same dbus stack trace.

#0  0xb7c176b6 in ?? () from /lib/libdbus-1.so.3
#1  0xb7c1709a in ?? () from /lib/libdbus-1.so.3
#2  0xb7c17111 in ?? () from /lib/libdbus-1.so.3
#3  0xb7c14d39 in ?? () from /lib/libdbus-1.so.3
#4  0xb7c1592e in ?? () from /lib/libdbus-1.so.3
#5  0xb7bffbf8 in ?? () from /lib/libdbus-1.so.3
#6  0xb7c01d98 in ?? () from /lib/libdbus-1.so.3
#7  0xb7c01ef2 in ?? () from /lib/libdbus-1.so.3
#8  0xb7c0f1f1 in dbus_pending_call_block () from /lib/libdbus-1.so.3
#9  0xb7c00e9a in dbus_connection_send_with_reply_and_block ()
   from /lib/libdbus-1.so.3

is there anything I could be doing to cause this?  Is this a known error
(with a potential fix) somewhere?

Thanks
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