I'm in an odd situation here.
I've upgraded my network to a 2008 domain from a 2003 with out any issue, this works fine and all the FSMO are in one DC,
I was about to install a second domain on a 2008R2 and this error is coming up again and again.
I The problem is I keep getting an area telling me that I need to run
adprep /domainPrep /forestPrep, but when I run it on the first DC, it tells me this has already been run and updated and it is aborted. Does anyone have any ideas on why I can't add a Server 2008 machine as a domain controller?