Vault Refresh Error

Hi ,

when i try to search email in a vault i got this error message :

"Il vault ricercato è in fase di aggiornamento.
Per ulteriori informazioni, fare clic sull'icona della Guida in linea."

"The vault is sought being updated.
For more information, click Help."

if i try  to use any command ( delete from vault or other) i got  no result.

i've tried to restard service/machine but with no results.

i recieve this message since 3 days!

anyone can help me?