Problems Installing Adobe Acrobat XI Pro via CreativeCloud on Windows 7

The following error is from trying to install Acrobat XI pro. Everything else has installed (7 separate software bundles, from InDesign to Edge Reflow) and updated correctly.

Exit Code: 7

Please see specific errors below for troubleshooting. For example, ERROR:

-------------------------------------- Summary --------------------------------------

- 0 fatal error(s), 2 error(s)

----------- Payload: Acrobat Professional 11.0.0.0 {23D3F585-AE29-4670-8E3E-64A0EFB29240} -----------

ERROR: Install MSI payload failed with error: 1601 - The Windows Installer Service could not be accessed. This can occur if the Windows Installer is not correctly installed. Contact your support personnel for assistance.

MSI Error message:

ERROR: Third party payload installer AcroPro.msi failed with exit code: 1601

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