Can't promote Windows Server 2003 member server to DC

I have a single domain Server 2003 forest with two domain controllers.  One of my DCs, which happened to hold all the FSMO roles, died earlier this week.  I seized the FMSO roles on the remaining DC and cleaned up metadata referring to the dead DC.  Now, I want to promote one of my member servers to be a DC but I'm running into a problem.

Each time I run dcpromo, I get through the wizard questions where it asks for the admin credentials and a password to assign to the directory services restore mode admin account, then it throws up the following error and reboots the server:

"The wizard is unable to determine the status of the Active Directory service on this computer"

I've analyzed the dcpromoui.log and compared it to the same log on remaining good DC (from when it was promoted years ago), and everything looks nearly identical until it gets to this point:

Enter DoubleCheckRoleChangeState
Enter EvaluateRoleChangeState
Enter MyDsRoleGetPrimaryDomainInformation
Enter MyDsRoleGetPrimaryDomainInformationHelper
Calling DsRoleGetPrimaryDomainInformation
lpServer : (null)
InfoLevel : 0x3 (DsRoleOperationState)
HRESULT = 0x800706BA
Exception caught
catch completed
handling exception

On the good DC, the same "DsRoleOperationState" check came up with this result:

Enter DoubleCheckRoleChangeState
Enter EvaluateRoleChangeState
Enter MyDsRoleGetPrimaryDomainInformation
Enter MyDsRoleGetPrimaryDomainInformationHelper
Calling DsRoleGetPrimaryDomainInformation
lpServer : (null)
InfoLevel : 0x3 (DsRoleOperationState)
HRESULT = 0x00000000
OperationState : 0x0

Of course, on the problem server the log ends shortly after that exception, while on the good DC the log shows that it ran through a number of additional checks and successfully promoted the server.

Any suggestions?  FWIW, the member server was configured to use the good DC, which is also an AD-Integrated DNS server, as its primary DNS server.  I have since configured the server to be a DNS server with a secondary DNS zone and have the server configured to use itself for DNS, but of course dcpromo still fails.