email address fail to open

When I attempt to send email and click on the to
button. , I receive an error that email address book
cannot open My contacts list has no problemsI either
have wrong location or do not have admin privilages. I
have gone to the email accounts undertool s directory to
verify the account is file is there then i have gone to
the properties of the outlook address book and selected
the "show this folder as an address book" check boxI
would appreciatea ny help.