[Exim] Berkeley DB errors

I recently upgraded to Exim 4.34 (with the exiscan acl patch) and now I
get the following messages in my log every time the server receives an
email:

2004-05-31 11:23:36 1BUrRg-0002rk-5L Berkeley DB error:
/var/spool/exim/db/retry: unexpected file type or format
2004-05-31 11:23:36 1BUrRg-0002rk-5L Berkeley DB error: Encrypted
database: no encryption flag specified

I've tried deleting the retry file but the problem comes back.

--
Rossz