problem with priview data but no problem with query builder (visual studio2008)

Question

when i use the query builder "visual studio2008" with a prameter query it works perfectly but when i use the preview data a get an erreur message 

 "ORA-01008: touts les variable ne sont pas liées" (see the upload source)

-Oracle database 

- connectionString="Provider=MSDAORA;Data Source=assurance;Persist Security Info=True;Password=*****;User ID=*****"

            providerName="System.Data.OleDb" />