You might want to try running it in Compatibility Mode, and set the mode to a 32-bit OS flavor. In explorer, right-click on the .exe, choose properties, click on compatibility, then select a 32-bit OS.
Even it works, this won't be a Cisco-supported configuration.
Table of ContentsIntroductionVersion HistoryPossible Future
UpdatesDocuments PurposeNAT Operation in ASA 8.3+ SectionsRule Types
Network Object NATTwice NAT / Manual NATRule Types used per SectionNAT
Types used with Twice NAT / Manual NAT and Network Obje...
Table of Contents Introduction:This document describes details on how
NAT-T works. Background: ESP encrypts all critical information,
encapsulating the entire inner TCP/UDP datagram within an ESP header.
ESP is an IP protocol in the same sense that TCP an...