FBX import mesh weird deformation

Using XSI, I exported animated mesh in FBX format.

When I imported it to Unity,
The animation work properly,
but there are weird deformation with the mesh.

I tried importing FBX file back into XSI, and there was nothing wrong with it.

Can someone help me with this?

I built a rather complex and ineffective rig,
Could this be a possible cause?


![alt text][1]
[1]: http://www.cg-site.net/products/145255

Got it solved now,
Basically I’ll have to go to
Edit → Project Setting → Quality
and increase blend weight to 4 bones.

2 Bones were set as standard.