Gonzalo,

> I try with Linux (SuperServer Beta).
> If not fill the DataBase: Alias field, the error is "Invalid database alias. Please enter a valid database name"
> If select a existent alias the error is "No path was specified for the backup file or database"

You must restore the database before you can open it. Look for the
Restore option buried in the Maintenance menu (haven't got IBConsole at
hand, so I can't remember the full path).
HTH
--
____
_/\/ando