Reproduction steps:

1. Open "MinimalRepro.zip" project
2. Open "Level_Apartments" scene
3. In the Hierarchy window expand "Doors" and select all the children "Door" GO
4. Open the Animation window
5. Uncheck "Door : Box Collider 2D.Enabled"
6. In the Inspector window Check the first "Box Collider 2D" box
7. See that there are errors in the Console
8. Enter Play mode

Expected Result: After step 6 no errors should appear/ After step 8 the Editor should enter Play mode
Actual Result: Errors appear after step 6 and after step 8 the Editor crashes ("Unity Editor has stopped working")

Reproduced with: 2017.3.0b4, 2017.3.0b3, 2017.2.0f3, 2017.1.2f1, 2017.1.1p4, 2017.1.1p2
Regression introduced in: 2017.1.1p2
Did not reproduce on: 2017.1.1p1, 2017.1.1f1, 5.6.4f1(Script Errors)

Note:
Crash doesn't always open the Crash Reporter
Error:
"Assertion error: Cannot create Collider2D shapes already exists"