try "wkix32.exe -i script.kix"

Kix is indeed a 32-bit process. It runs on both 32 and 64 bit platforms without issue. You do need to pay attention to the WOW3264 issue for the SYSTEM folder and the registry, but aside from that, no special process is needed on x64 platforms.

Glenn
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Actually I am a Rocket Scientist! \:D