amosvalidate error

[zxybl]

I created an amos bank file from newbler ace file. but when I run amosvalidate. it has this error:
!!! 2013-02-26 12:12:50 Doing step 420
!!! 2013-02-26 12:12:50 Running: /gsc/bin/loadFeatures -i americanus454.bnk americanus454.snp.feat
Loading features from americanus454.snp.feat into americanus454.bnk
ERROR: -- Fatal AMOS Exception --
WHAT: Could not open bank for writing, locked by 'r 12287 xzhang'
LINE: 961
FILE: Bank_AMOS.cc
!!! 2013-02-26 12:12:50 Command: /gsc/bin/loadFeatures -i americanus454.bnk americanus454.snp.feat exited with status: 1
!!! END - Elapsed time: 0d 1h 58m 8s

does somebody know how to fix it?
any suggestions are appreciated!

xu

[zxybl]

fixed

use this command bank-unlock to unlock the bnk file.