Exchange 2010 Mailbox Role installation errors

I have an exchange 2003 environment.  I am installing new servers for Exchange 2010 to migrate the mailboxes over.  I have the CAS and hub transport roles installed.  When I try to install the mailbox role I get errors referring to "# upgrade the discovery mailboxes to R5 version, this will fix the RecipientDisplayType property of the discovery mailbox which was wrong in R4. "  as well as further down I get "Skipping creating Discovery Search Mailbox because of insufficient permission."

I have looked and found several articles but none seem to fix the issue.  Any help?  Thanks!
UMPH_UserAsked:
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e_aravindCommented:
1. Remove the DiscoverySearchMailbox from ADUC and run the Setup.com /prepareAD to create the DiscoverySearchMailbox again to get default permissions for DiscoverySearchMailbox account.
2. Reboot the Exchange server , re-run the setup again

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UMPH_UserAuthor Commented:
I could swear I did that already but all the days working on this seem to be running together.  Thanks.
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