Role owner attribute cannot be read

[steve.sarrick]

I have a lab unity 3.1.6 environment that I am using to test an upgrade to 4.0.5. When I try to Schema update, I get the "Role owner attribut cannot be read". I have read that this can happen when a DC is offline. This DC is the Schema Master and all other FSMO roles, but I continue to get the error. Unity works fine in 3.1.6 environment. Is there a workaround for this?

[steve.sarrick]

Found out the issue myself, but I thought I would post if anyone would run into this. I had to use NTDSUTIL and run a metadata cleanup to remove the original schema master from the lab. Even though I seized the role, something was looking back at the original schema master.