Hi all,
If you’re using OJS/OMP/OPS 3.2.1-1 and newer, and encounter the Illegal mix of collations error message, try specifying a collation in config.inc.php in the [database] section:
collation = utf8_general_ci
The default will be utf8_unicode_ci, but your server might be defaulting to utf8_general_ci instead.
Regards,
Alec Smecher
Public Knowledge Project Team