I just purchased "Crysis Maximum Edition" from Amazon as a downloadable game. I was able to patch Wars and Warhead just fine, but I can't patch Crysis with any of the patches (1.1, 1.2, 1.2.1). Any ideas?

Error Message: "The upgrade patch cannot be installed by the Windows Installer service because the program to be upgraded may be missing, or the upgrade patch may update a different version of the program. Verify that the program to be upgraded exists on your computer and that you have the correct upgrade patch."

Operating System: Windows 7 Professional 64-bit

System Configuration: EVGA Classified SR-2 Motherboard, Dual GTX 560 Ti FPB in SLI, Dual Xeon 5650 CPUs, 48GB of Ballistix RAM, Two SSDs in RAID 0