Unable to mark animation as legacy

Hello,

When I make an animation I keep getting the error that I need to mark it as legacy before I can use it on an object. I have tried everything to solve it, but nothing seem to work. Can anyone help me with this issue?

This is the error message

The AnimationClip ‘Attack’ used by the Animation component ‘Mace’ must be marked as Legacy.
UnityEditor.HostView:OnGUI()

(I am using Unity 4.3.1)

Try these answers, post a comment if you have tried to fix it with these suggestions and you still are stuck.