I need help on understanding what this means.

FnafGeek101 BE is guessing that your issue is caused by broken CC. I can't see a reason for that to be tied to culling, but you can test if just removing CC and deleting localthumbcache fixes it.

Otherwise, it would be helpful to know what was happening when the error occurred. And also if you've tested if the problem that happened happened with no mods or CC at all.

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