ipkg update reports "file too short"

Hi all,

I have a GoFlex Home, which is based upon the OpenStora system, which uses ipkg
for package management:
http://www.openstora.com/wiki/index.php?title=Getting_Started#Preparing_to_insta\
ll_software_and_checking_free_space

So I followed the instructions for moving /opt (I moved it to /mnt/eSata/opt)
and have been installing packages.

I cancelled an install process of ipkg and now it reports:

bash-3.2# /opt/bin/ipkg update
/opt/bin/ipkg: error while loading shared libraries: /opt/lib/libipkg.so.0: file
too short

The only way to get around this seems to be a reinstall of ipkg. That's
annoying...

Help?

- Phil

PS here is the results of running 'df':

bash-3.2# df -h
Filesystem Size Used Avail Use% Mounted on
rootfs 212M 196M 16M 93% /
ubi0:rootfs 212M 196M 16M 93% /
none 62M 32K 62M 1% /dev