Designer XIR2: connexion error

Hi!

Designer in local. My Univers is well imported with an ODBC connexion to an SQL Server 2000 database. But when I want to get a new table or just look at data inside one of the tables I have the following answer:

[Gestionnaire de pilotes ODBC] Source de données introuvable et nom de pilote non spécifié.

Thanks for your help