New 10.8 system user authenticates through a Linux LDAP server. User can login, but when we try to go to System Preferences -> Accounts then System Preferences crashes. When logged in with an admin account this does not happen, but of course we can't see the user's account in System Preferences because it's a network account. So we're unable to set the user's account as mobile or admin. Is there a way around this? Can you set a mobile account or local admin account via command line?