Try an Office newsgroup. This newsgroup deals mainly with
Windows Mail problems.
Gary VanderMolen
"kmarlowe" <> wrote in message news

68A546E-E227-425A-8387-...
>I used the Easy Transfer wizard to move my XP installation, including Office
> 2003, to a new Vista box. All seems to be well in Outlook, except that trying
> to delete any recurring appointment gives an error "Object is not valid."
> This happens both with pre-existing appoinments and new ones I create in
> Vista. Non-recurring appointments give no problems.
>
> Help?