You should first upgrade to System Center 2012 DPM Release Candidate and then run setup again. Download System Center 2012 ...

You should first upgrade to System Center 2012 DPM Release Candidate and then run setup again. Download System Center 2012 DPM Release Candidate from : http://go.microsoft.com/fwlink/?LinkId=184211. If your DPM license has expired, you cannot perform an upgrade. You must uninstall DPM before installing the new version.
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