Sorry if it's not right to post here, but i think as FBX with blender is more dev than stable (https://developer.blender.org/T43613), so it may be broken something due of compatability and i don't know what version use Leadwerks but for Blender is fbx version 7.4. (2015?), i am sure they say leadwerks works with fbx from Blender. Thus thank you for your link, it doesn't solve my problem... According to you, how you doing for working animation ?