unable to monitor nfs with BB extension script

My xymon server is Solaris 10 running Xymon 4.2.3. I am in the process of migrating from BB to Xymon. I have a solaris 10 sparc client which is running both BB and Xymon clients. To prep Xymon for BB extension scripts, I first concatenated bbsys.local onto hobbitclient.cfg.

Next I installed the BB extension script *bb-nfs-client.sh*. It erroneously reports "No NFS filesystems currently mounted on ftp01" under the Xymon client. The same script works correctly under the BB client.

I ran the script in debug mode. It correctly populates PINGEDHOSTS and NFSHOST. However it ends as:

• /usr/xpg4/bin/egrep -vi (No such file|not a block device) /export/home/xymon/client/tmp/NFSOUT.8354.err STj
• /usr/bin/mv -f /export/home/xymon/client/tmp/NFSOUT.8354.err~ /export/home/xymon/client/tmp/NFSOUT.8354.err
• [ -s /export/home/xymon/client/tmp/NFSOUT.8354.err ]
• [ -s /export/home/xymon/client/tmp/NFSERR.8354 ]
• [ green = green ] STATUS=status <xxx>.nfs green Fri Aug 21 09:59:09 CDT 2009 - NFS mounts on ftp01 OK
• [ -s /export/home/xymon/client/tmp/NFSOUT.8354 ]
• [ = -a = ] LINE=No NFS filesystems currently mounted on <xxx>
• /export/home/xymon/client/bin/bb 10.80.6.50 status <xxx>.nfs green Fri Aug 21 09:59:09 CDT 2009 - NFS mounts on ftp01 OK

No NFS filesystems currently mounted on <xxx>

What else do I need to do to get this script working properly under Xymon?

thanks