When I import my ragdoll into unity from blender it never works. I import it fine and place it on the terrin fine, but when I make the ragdoll from the tutorial it just stays as a solid object when I run the scene. Then I find the ragdolls creator components are mapped completely away from the actual ragdoll model. I think it’s something to do with left/right handed systems - wondering how you convert from blender into unity? 
Has me stumped.
No one?
I’m a programmer so I don’t have that much experience in Blender, which is also a new tool for me. About two weeks ago I created a ragdoll from a model I rigged in Blender, and it wasn’t as easy as I supposed. First I had to practice on the soldier model from the bootcamp demo, to understand which are the bones required by the ragdoll wizard. Then I realized that my model required certain bones, and had to build the skeleton again. After that I didn’t have any problems.
You could also check this system that is available in the Asset Store: http://www.youtube.com/watch?v=PTmVLD-1ilQ
When you import a model from Blender to Unity, you also import the bones of the character. A ragdoll is basically just joints between the rigidbodys of these bones.
I always do this manually by script (so I can trigger it whenever I want, i.e upon death).
Or you could use the ragdoll wizard.