Don't ask me to explain it, but I logged out of the domain admin
account, and logged in as another account (which is *also* in the Domain
Admins, Enterprise Admins, Schema Admins groups, exactly like the domain
administrator account).
And it worked perfectly, exactly as it should. Huh?
I had
Issues
Subject: Re: Error seizing schema master FSMO role in Win2003 AD - RESOLVED
Don't ask me to explain it, but I logged out of the domain admin account, and
logged in as another account (which is *also* in the Domain Admins, Enterprise
Admins, Schema Admins groups, exactly like the domain