Animation not fully loading...

I'm currently trying to upload some animations I made use Avimator. I am having a problem where when I go to preview the animations before I upload, some of the animation shows up and some part's don't. For example, on the current animation I am working on, all the leg animation is fine but none of the arm movement shows up. How do I fix this?

assuming the animation looks fine in avimator right
how many keyed frames do you have the arm movement in. maybe if just little not registering it. try making copy of your bvh, make a major change in one frame. try to upload see if works. just for testing purposes. if that bvh will upload then maybe that

honestly i have no idea just suggestions

1. Are no body parts moved in frame one? Then every part moved in frame 2?
2. are the parts moving enough? If the roation values don't change enough between keyframes, SL will throw it out to 'help with lag'

Using Qavimator I have hands positioned on lap, they move and the uploaded version moves problem is, the arm position is raised off the lap about a foot in relative term. Also had the anim sitting but each preview (preview while standing & preview while sitting) were not really close to the Qavimator position (in standing, one leg is bent the other straight, in sitting the leg cross does not show up). I had made a drummer that sits with one leg keeping time worked fine, am I missing something?

Ray:
The arms floating is because your avies proportions do not match exactally the one you use in Qavimator. I haven't used the program before but is there an option to change the length? You have two choices. If you can change the length it might be wise to change them based on how body parts are in relation to eachother. This can only be done by trial and error. Or you can just position the arms in Qavimator down, even going into the legs, so it looks correct in SL.

Did you move every rotaion of every body part by at least 1 degree in frame two? If you did not then even if you move it later, SL will not read it. The difference between frame one and frame two is an important bit. Not only does it tell SL how much to move them in frame two but to watch the parts that have moved already for the rest of the anim. What I use and tell everyone else to try, is make your own default starting anim where frame one is default, everything is moved in frame two and save it. Load that when starting another animation save it as a different name, and a lot of your problems will be solved.