I wanted to tweak some of Skyrim's animations. Getting them into 3dsMax 2012 and editing them works just fine, but it seems to be impossible to get them back into the game properly.

For getting started I tried to im- and export the 1hm_runforward animations (tried both 1st and 3rd person - yes, each with the correct skeleton) without changing anything in max. Both the tutorial on the nexus wiki (http://wiki.tesnexus.com/index.php/Working_with_animations_in_Skyrim) and the tutorial by xp32 and aeon (http://www.nexusmods.com/skyrim/mods/15238/?) give me screwed-up results: either the right arm just bends out of the screen or the whole character does a breakdance.

Yes, I carefully followed the instructions. Yes, I used the right version of the Havok tool. Yes, I am aware that Max 2012 needs a workaround when using Havok tools and I did convert my file using hktcnv.

Any ideas what could be wrong?