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