Changer suddenly not working.

[Chris Johnson]

Hi list.
I'm having a funny problem with my tape changer. first:
I''m using chg-zd-mtx script
i have amanda-2.4.2p2
I'm using an adic fastor 4000.
all on redhat linux 7.2

Recently amanda can't find a good tape. my label regex is correct and tapes are labeled correctly. The first tape scanned with either amtape command or amcheck reads the correct lable. But none of the other labels are read. ie.

amtape: scanning all 7 slots in tape-changer rack:
slot 7: date X label ARCHIVE112702#2
slot /usr/local/libexec/chg-zd-mtx:: no tape online
slot /usr/local/libexec/chg-zd-mtx:: no tape online
slot /usr/local/libexec/chg-zd-mtx:: no tape online
slot /usr/local/libexec/chg-zd-mtx:: no tape online
slot /usr/local/libexec/chg-zd-mtx:: no tape online
slot /usr/local/libexec/chg-zd-mtx:: no tape online

I've changed the OFFLINE_BEFORE_UNLOAD and offlinestatus options in the CHANGER.conf file. this has worked before. I believe that all I've done differently is to begin labeling more blank tapes. We got a new shipment of dlt tapes and I haven't changed the number of tapes amanada knows about. I didn't think amanda would care if she was given a new tape each run untill I had labeled and used all the new tapes.
Has anyone else had this problem??
Can anyone tell me where I should begin looking??
thanks,
chris