A cross-ref has a NULL GUID in it's nCName attribute. Cross-ref DN: %2 nCName attribute (Partition name): %1 If this Partition ...

A cross-ref has a NULL GUID in it's nCName attribute.

Cross-ref DN: %2

nCName attribute (Partition name): %1

If this Partition is not a new tree partition, then consider removing this partition
and/or cross-ref from the enterprise.  It is normal for a separate-tree root domain
crossref ncName to not have a guid temporarily after dcpromo of a Windows 2000 domain
controller. A Windows Server 2003 domain always has a guid.  Without the guid,
the KCC will not honor the cross ref and replicate in a replica of the new domain.
Please allow time for knowledge of the guid to replicate out to the forest.  If the 
guid is still missing, please verify that a replication path exists from the recently
promoted domain controller to the rest of the forest.