I put the .dlls in the source directory and used the .\ option. At least I get the same result now - a window opening and closing. No message about missing .dll for the 64 bit version.
The message that shows up briefly is, I think, "MYSQL Client: " + mysql_get_client_info$ . It's a very short message.
Does this have anything to do with nothing else happening? As far as I'm aware I'm not connected to any database.
PRINT mysql_real_connect(conn, "qb64db2.db.7445102.hostedresource.com", "qb64guest", "QB64forever", "qb64db2", 0, 0, 0)