Pawn dies instantly

[SlimeCrusher]

Edit: Ok fixed the negative coverage value thingy, but the instant death persists.
What happens is that when my custom pawn gets even the slightest damage possible, it dies... Even though no vital part was damaged, nor broken, what did i do wrong? My ant pawn works ok, but for some reason the crab doesn't like it's new bodyDef 
Help?