Ok, thank you. I was just frustrated by loading animation after animation in Max (having to scroll through the file dialog), but then I remembered that I can also view the animations in the Creation Kit, which is a lot faster. To answer my own question: The problem was that the Havok Tool doesn't export the annotations correctly from Maya. It only read attribute names that start with "hk", and it also stores this "hk" prefix in the animation files. The workaround is to call the attribute "hkot", so the annotations are exported as "hkotLeft" and "hkotRight". Then replace the string "hkot" with "Foot" in the binary files. Crude, but works.