Here is what you need to do,
1 open both the Dragonborn.BSA and the Update.BSA (make sure its the latest update file!)
2 go to the Dragonborn.BSA first and look for this file, meshes\actors\dragon\character assets\skeleton.nif
3 now open the Update.BSA and look for these files,
meshes\actors\character\character female\defaultfelmale.hkx meshes\actors\character\characters\defaultmale.hkx
Extract these files into you skyrim data folder and make sure they are in the right locations!
So far I know it fixed the issue with the telvanni levitation thing and I tested the dragon riding I can get on the dragon and not have my character doing a T pose while the dragon is flying I will need to start a new save to see if it fixed the other animations.
If this works for you please comment!
P.S I am also not FNIS so I don't know whether that will make a difference or not.
Update, It WORKS! (happy dance time:) )
Edited by Oddhand, 09 February 2013 - 08:18 PM.