When leave the field ID empty the UUID must set automatically the value..but return me an error..this error return from the form insert of phpmyadmin.
Maybe the WHERE is too much..and can be disable.
UPDATE `eventi`.`utenti` SET `id_utenti` = UUID( '' ) WHERE `utenti`.`id_utenti` = 'UUID()' LIMIT 1
Messaggio di MySQL: Documentazione
#1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ''') WHERE `utenti`.`id_utenti` = 'UUID()' LIMIT 1' at line 1
Fixed in subversion, thanks for reporting.