The AnimationClip must be marked as Legacy and loop

Hi, for my game I’m using legacy animations, I made an animation with the unity animation editor and now I can’t make it a legacy animation neither make it not loop. Can you tell me how can I mark it as legacy and make it not loop? in case you can’t see the image here, here’s the link Dropbox - Error - Simplify your life
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this is my window in the editor

I ended up using Mecanim even for only one animation… Problem solved