Can't pull domain user list

[epickett]

We have a TS1400D on Active Directory that has been running for a while just fine.  One of our domain controllers crashed, so I'm trying to switch the AD configuration to another one.  In the configuration screen I entered the name of the DC, then the administrator/password.  It churned for a while, then gives me an error:
"Participation in the Active Directory domain failed.
Check the settings of the Active Directory domain and check the Administrator username and password."  After I hit cancel and looked at it again, it now has the new DC name, but I still can't look at the list of domain users under permissions.

When I try to look at domain users, or permissions on the directories, I get "An item outside the specified range was found."  How can I fix this??  If I have to remove this thing from the domain and rejoin again, I'm going to be SERIOUSLY ticked off.  I've already had to do it twice in the past, which each time resulted in having to go in and edit permissions for 170+ user directories ONE BY ONE.  >:(

[Texturtle]

You many need to change the DNS server to the new DC.

[epickett]

Actually, the DNS server *is* the new DC...   
After letting it sit overnight, I can pull up the username list again.  But it has forgotten the permissions on all the user directories AGAIN.  So there goes another 3 hours worth of my time to configure them again...NOT happy.

[davo]

Backup the settings Incase it happens again