If you're wanting to promote a 2012 R2 server to be a Domain Controller in a 2003 domain, you'll need to run adprep.exe from the 2012 R2 ISO to update the AD schema.
See this blog for more detail: http://support.risualblogs.com/blog/2013/10/25/wmi-error-when-adding-a-server-2012-r2-domain-controller-to-existing-2012-domain/
