Elements of the error message include:
Your database table name will prepend <table>.INET6_NTOA
A Database Error Occurred
Filename: libraries/datamapper.php
Error Number: 1305
Line Number: 1346
Cause:
arpReach v2 introduces IPv6 support for the purposes of geo-location.
IPv6 support was never included nor will it be added into MySQL 5.5.x
Solution:
MySQL should be updated to at least MySQL 5.6.3
(or MariaDB 10.0.12 + )