At first sorry for my english.
When i try to export my mesh and skeleton from blender have this problem
if you see the hip bone go to 0,0,0 and all the spine move down along z.
what is happening is that blender adds a bone where the root/armature is on export.
you can stop this by modifing the fbx exporter Prevent Blender FBX Exporter adding extra root bone – Kris Redbeard
i would advise using a secound version of blender when doing this just in case you need an un-altered version of the fbx exporter