How to fix: Broken YAML file. Local file identifier doesn't exist

I'm just download Unity3D 5.1.2 , and i got version 5.1.2f1 installed. I was create a new project, with all Asset Packages. When finish create the project, i got 2 messages on Console Tab, Clear on Play, it said: Broken YAML file(Assets/Standard Assets/2D/Animator/2dCharacterAnimator.controller). Local file identifier (110283043) doesn't exist! Broken YAML file(Assets/Standard Assets/2D/Animator/2dCharacterAnimator.controller). Local file identifier (110232664) doesn't exist! How to fix this? I'm working on Mac OS X Yosemite.