I have just found that 'maxvalue' is a resersed word for Mysql starting
from version 5.5 . Unfortunately, maxvalue is the name of a table field
used by CK-ERP, so CK-ERP will not work with Mysql 5.5 or above.
Specifically, the latest release of XAMPP, version 1.7.4, will be
affected, as it runs Mysql 5.5.8. As far as I can escertain, this is
not a problem with Postgresql and Sqlite.
This problem will be rectified in the next release of CK-ERP.
Best Regards,
CK