solution (just tested with one of our systems) for our site:
[root@vm /]# cd /var/opt/eset/esets/lib
[root@vm lib]# mv em002_32.dat em002_32.dat.o
[root@vm lib]# cd /opt/eset/esets/sbin/
[root@vm sbin]# ./esets_update --verbose
Virus signature database has been updated successfully.
ESETS Update utility
+-+--------------------+------------------------+------------------------+
| | Module | Available version | Installed version |
+-+--------------------+------------------------+------------------------+
|*| loader | 1076