Yes, I have flatten

otam

to

otamfrc

. Then,

extract do local

extract all

ext2sim labels on

ext2sim

extresist tolerance 10

extresist

at this command if found

cannot open file ncsm.sim ....

as shown. Did I miss any commend there?

Once you have flattened

otam

you need to do

load otamfrc

.

Thanks @Tim Edwards I got it.