Animation thresholds

I bought a model from a model stock. (exactly this one: http://www.3dmodels-textures.com/store/civilfighter?search=civil%20fighter) It has unity package so i imported it without problems.

The problem is: - add 2 animations walk and run to the blend tree. I cant calculate thresholds (it just goes to 0 for both animations). - and my movement is strange due to this (out of the pace of the nav mesh).

It is no a code problem, because when i replaced model with the Stealth project robot, animation worked well with same parameters.

Any guesses on what could be the problem? Can it be configured, or is it sloppy animation files missing some parameters?

P.S. Simple animations like Idle work ok.