Error During Exchange 2013 Mailbox Transport Role Install On Server 2012

I was installing Exchange 2013 on Server 2012.  The server is not a DC, but is a member of a domain with a 2008 R2 functional level, and I was logged in as a domain admin.  There has never been an Exchange instance on this domain.  I got past the prerequisite checks, and the installer showed 15 steps, so I walked away.  When I came back, I saw this:

Step 8 of 15: Mailbox role: Transport service

Error:
The following error was generated when "$error.Clear();
          $maxWait = New-TimeSpan -Minutes 8
          $timeout = Get-Date;
          $timeout = $timeout.Add($maxWait);
          $currTime = Get-Date;
          $successfullySetConfigDC = $false;

          while($currTime -le $timeout)
          {
            $setSharedCDCErrors = @();
            try
            {
              Set-SharedConfigDC -DomainController $RoleDomainController -ErrorVariable setSharedCDCErrors -ErrorAction SilentlyContinue;
              $successfullySetConfigDC = ($setSharedCDCErrors.Count -eq 0);

              if($successfullySetConfigDC)
              {
                break;
              }
              Write-ExchangeSetupLog -Info ("An error ocurred while setting shared config DC. Error: " + $setSharedCDCErrors[0]);
            }
            catch
            {
              Write-ExchangeSetupLog -Info ("An exception ocurred while setting shared config DC. Exception: " + $_.Exception.Message);
            }

            Write-ExchangeSetupLog -Info ("Waiting 30 seconds before attempting again.");
            Start-Sleep -Seconds 30;
            $currTime = Get-Date;
          }

          if( -not $successfullySetConfigDC)
          {
            Write-ExchangeSetupLog -Error "Unable to set shared config DC.";
          }
        " was run: "Unable to set shared config DC.".

The only option on the screen was exit, so I did.  I checked the start menu, and there were two new Exchange icons, but I did not click them.  I ran the installer again, and it detected an incomplete install, the only option was to click next to finish the install, so I clicked next.  This time, I eventually got the same error, except the screen showed "Step 8 of 15: Mailbox role: Transport service."  I did install some Exchange 2010 prerquisites on the server before Exchange Server 2013 came out, and I can rebuild the server and try the install again if that would be best, but I thought I should post here first and try to work through this since the product is so fresh.  Any suggestions?