SBS2011 Migration error

I am running the SourceToolWizard on a Server 2003 R2 server and get past the Domain and forest update and the schema update.  I then get the following error:

03/31/2012 18:18:26  !Error! BPAEngine:      Microsoft.WindowsServerSolutions.SmallBusinessServer.Tools.MigrationPrep.Wizard.BPAException: Health scan: SBSMigrationPrep model is not found.
   at Microsoft.WindowsServerSolutions.SmallBusinessServer.Tools.MigrationPrep.Wizard.MBCAEngine.Run()
   at Microsoft.WindowsServerSolutions.SmallBusinessServer.Tools.MigrationPrep.Wizard.BPALauncher.Run()
03/31/2012 18:18:26          Unexpected errors occurred during BPA scan.

Any help would be appreciated.
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WORKS2011Austin Tech CompanyCommented:
Does this help with your problem, click here.
Alan HardistyCo-OwnerCommented:
If you download and install the following program and reboot the source server, it may well continue happily:

creativenetworksAuthor Commented:
When I run sbs.msi from the root of the D:\setup folder, I get the following error:

The installation package cannot be installed by the Windows Installer Service.  You must install a Windows Service Pack that contains a newer version of the Windows Installer Service.

The server is running 2003R2 with SP2 on it so I am a bit stumped.

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Alan HardistyCo-OwnerCommented:
SBS.MSI?  the download is for MBCA_Setup32.msi

System requirements
Supported operating systems: Windows 7 Enterprise, Windows 7 Professional, Windows 7 Ultimate, Windows Server 2003, Windows Server 2003 R2 (32-Bit x86), Windows Server 2008, Windows Server 2008 R2, Windows Vista Business, Windows Vista Enterprise, Windows Vista Ultimate
creativenetworksAuthor Commented:
I don't see a file named MBCA_setup on either of the disks.  I see SBS.MSI on one of the disks and WS2008_setup.exe on the other.
Alan HardistyCo-OwnerCommented:
Have you downloaded the file from the link in my earlier comment?

Once you have, install the software and then reboot, then run the Source Tool Wizard again.

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creativenetworksAuthor Commented:
Yes I got it.  The install wizard is up and I'm waiting until after hours tonight to continue with the Migration Wizard just in case.

Appreciate it!
Alan HardistyCo-OwnerCommented:
No probs - hopefully it should allow you to continue.
creativenetworksAuthor Commented:
SBS2011 comes on two disks and I was using the wrong disk.  Once I switched, I was able to get the Migration Wizard to function properly.
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