Heres one that crashes my app every time. Maybe I shouldn't be doing this
but if not I reckon it should give an error message and not a crash.
In Terrain Tab highlight the "heightfield shader 01"
below that rename the 1st item to whatever you want "Heightfield Shader 01" to HS1 for example
then rename the item below that to the same thing "Heightfield generate 01" to HS1
insta crash
note if you rename the bottom one 1st then the top one to the same thing it dowsn't crash.