Ok, well I have been trying to import some animated arms I made in blender, and it seems like everything I do just isn't right. I get the arms in but when I attatch it to my camera at the right area it doesn't show up properly. Then when I made a script to only play the animation when I press a button, only one of the arms animated... very confused...
Hi. try to check this:
All the bones have an animation key at the beginning of every action, you have at least 2 keys on it and do not use other objects to manipulate the bones because there will not create any action when you animate them, so just use bones for you character or what ever you made, this way you can have a correct action (animation) in unity and try to use the Blender scene directly on unity (Blender 2.49 just work fine higher versions don't).
One more thing, don't use the NLA in Blender to make mixed animations to export to unity that not work.