It appears the cache can get corrupted.
On a mac it’s here:/Users/[yourusername]/Library/Application Support/snapmaker-luban/Cache
Not sure about pc.
What are you trying to slice? Some more complicated objects give Luban fits. And sometimes a bad stl can be unsliceable. Have you tried slicing in Cura?
Share the stl and we can take a look at it.
-S
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