Terrain crash

Hi ive had a problem with scenes crashing, ive now have narrowed it down to anything that has terrain .
Even in an empty scene it crashes unity 2018.4.14f1 any ideas ! Best Hugo

Hi thanks for your reply It’s happening with anything that has terrain in it even in an empty scene . I’ve tried crash report but it only uploads 50% of what I’ve sent then stops ! I will try a new project . Just tried a new project terrain works there . Could it have anything to do depthoffield.cs