Problem installing Flight Sim X

I recently installed Vista Ultimate on my Macbook Pro. I tried installing MS Flight Sim X and at the end of the install, it says "Publishing product information", then this error occurs:

Error1935.An error occured during the installation of assembly
'Microsoft.FlightSimulator.SimConnect
,publicKeyToken="67c7c14424d61b5b",version="10.0.60905.0",type="wi
n32",processorArchitecture="x86"'. Please refer to Help and Support for more information.

when i click OK it then proceeds to roll back for about 5 minutes and then gives me this message:

Error: -1603 Fatal error during installation.
Consult Windows Installer Help (Msi.chm) of MSDN for more information.

I tried installing a few times and each time is the same. Does anybody know of a solution to this problem?