I am migrating from NW 5.0 SB to OES NW 6.5 sp7

The migration process has gone through with out error tranferring files and
the 1st part of NDS migration. After the step rebooting the new server
DS.nlm did not load and will not load.
I traced back to NTLS.nlm will not load.

1497 error when I try to run pkidiag

Thanks for your help