Soapskin doesn't want to accept my closed loop

Soap Skin keeps telling me that I need to select 3 or more lines in a closed loop. I have checked and even redrawn and I still get the same response. I have tried it on just a doodle and it works. I have had this problem before when I was just playing around with it. Is there a way to have the loop self correct or run a check?

It would help if you uploaded a model that is giving you problems so we can see why.