Troubles connection to mariadb

hi everyone, i cant connect to my database wich is on mariadb...
connection is ok with heidi, but i have an error using toad data point and I cant figure out...
could someone help me??

Object cannot be cast from DBNull to other types.
Stack Trace:
at System.DBNull.System.IConvertible.ToInt32(IFormatProvider provider)
at MySql.Data.MySqlClient.Driver.LoadCharacterSets(MySqlConnection connection)
at MySql.Data.MySqlClient.Driver.Configure(MySqlConnection connection)
at MySql.Data.MySqlClient.MySqlConnection.Open()
at Quest.Toad.MySQL.MySQLConnection.OpenInitialTestConnection()
at Quest.Toad.MySQL.MySQLConnection.DoBeforeConnect()
at Quest.Toad.Db.Connection.Connect(Boolean notify)
at Quest.Toad.Db.Provider.BackgroundConnector.CreateBackgroundConnection()

Welcome to the TDP community here at ToadWorld, David.

For issues like this, involving stack traces, it's always best to create a Quest support ticket.

Having said that, are you trying to connect to the database using TDP's MariaDB connector (preferred), or the MySQL connector?

Both of them...

-------- Message d'origine --------

OK... if you're getting an error message using either of the connectors, and you're sure that the credentials for connection are valid, best to open up a Support Ticket so that Quest engineers can troubleshoot.