When I click on the TO: button in a new email my contacts are displayed for me to choose the person I want to send the message to. If I try to scroll down the list I get to a point, about the same point each time, Outlook just closes. I have ran scanpst and it shows no errors, I have deleted the contact or two where it seems to be hangin up to see if I could bypass the bad contact, I have exported my contacts and deleted them and then re-inported them. If I just go to contacts and open each one their seems to be no problem. But if I open the address book or click on the TO: button and scroll down Outlook closes. I really do not want to rebuild my contacts and distribution lists. Any help would be greatly appreciated.