Editor crashes after saving

Hello!
My editor keeps crashing in one specific project every time I apply some change to the landscape mesh. Nothing happens when I make other changes though. Can I do anything about it or maybe I should try to transfer it somehow to another project with new landscape? Thanks for your time.
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Fixed ! The project crashed becouse I have changed Landscape Max LOD Level value to 0, after changing it back to -1 it saved without crashing.