I have not see that particular error myself. To reinstall just ensure you backup your mods folder, the saved folder (only concerned about mods.db really if you’ve uploaded something), and the mod tools folder (again, only really concerned about this if you’ve uploaded something).
You won’t need to import assets, they will just be discovered like they had before when the devkit opens. I know this works because I was able to copy over said three folders to a fresh dev kit installation on a different machine and resume my work.
For me a couple assets had to be updated (their references broke because the other system doesn’t have the exact file structure). You will know the asset has a broken reference because the box will point to nothing (in the case of a something other than a blueprint it will just have the default missing texture or whatever fallback that type has). Shouldn’t have much trouble with this since you are just restoring the same system.