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?