How to reproduce:
1. Create a project, open it
2. Add a 3D Object (Cube, Sphere or etc.)
3. Add a Cloth component to it
4. Remove a Mesh Filter and add a Text Mesh component to it (with some text in it)
5. Press play

Expected result: Editor doesn't crash
Actual result: Editor crashes

Reproducible with - 5.6.0b5, 5.5.1p1
Not reproducible with - 5.4.4p2

Notes:
1. If the issue doesn't reproduce, try again, beginning from step 2 (should crash by second or third try)
2. It doesn't seem to reproduce if you open the project with these settings saved