Motorola Photon 4G :: Crash While Editing Contact List

This error sometimes disables access to my contact list (both directly through the dialer or through text messaging) for several minutes. I can delete contacts and add new contacts (although adding contacts sometimes results in the same crash). I have, on maybe two occassions, been able to successfully edit contact information through the contact list on my Photon, without this error appearing. But it has been several days since then. Yes, I've rebooted the phone several times without any effect on this problem. I've also killed the application through the task manager and then started the application again, also with no effect.