Epic fixed a lot of those early crashes.
Make backups either in version control or manually by zipping whole project and storing on ANOTHER hdd.
When corrupted blueprint happens usually editor crashes when you try to see that blueprint.
And if you mean that editor crashes when you try to call that function. Yo u probably can open that blueprint, so first backup whole project then open it and delete that function.
Corrupted stuff happens when you open 2 copies of editor, and one locks one file while other copy tries to save, then you force it to close.
Or when you delete actor and force remove it.
You also can try to fix redirectors on whole projject and subfolders.