Steps to reproduce:

1. Create a new Unity project
2. Create a new GameObject in the Hierarchy
3. Rename GameObject so it would have a '/' in its name
4. In Animation window, press Create
5. Save the new Animation
6. Observe the Inspector

Actual behavior: Animation was created, but Animator component along with Animator controller weren't
Expected behavior: if GameObjects name contains invalid characters, the Animator controller should be created regardless (having a default name as if it was created via Project View) and Animator component should be added to GameObject OR at least an error/warning should be printed to the console

Reproducible with: 2017.1.2p3, 2017.2.0p4, 2017.3.0f1, 2018.1.0a7