here, SaidenStorm, this is the package i sent to my tester.
http://www.4shared.com/file/6H2mNj4u/CentaurFull250710.html
But I dont know what going on here, there isnt any scripts that would cause an issue, it isnt a mod conflict. Maybe with the full package you'll have a better chance of seeing whats wrong.
EDIT: Further testing:
I put the normal one hand equip and one hand idles in instead of my animation....guess what....still crashed. This entirely rules out the animations being the problem.
I found out what the issue was, oddly enough it was pretty much every other animation except for the equip

, I am fixing up the animations and since my Son was having a blast running around as a HorseMan !! as he calls it, I was going to create a character setup profile for prioritizing all of the anims bones so the blend correctly, if you want those anims I can send them back it will take some time though as it takes quite some time to setup everything, but after I am done with the setup all I have to do is make sure the anims are named correctly and it will process and spit out perfectly working anims.
If you want to do the fix yourself what you need to do it go over every OneHand anim and make sure that the Active Sequence Names are correct (most aren't) and go over all of the Sequence Tags and correct them as well (again most are not correct, they are actually most set up like an equip anim -> guess thats a drawback from cut and paste using Andrew Maneri's Anim Wrapper).