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How do I remove the modification Maps Writer? I am using the version 1.6.4 Direwolf20 and when I want to turn this map it is not on the list of mods, so please help me how to turn it off.
If you have opis disabled when you update DW20's pack, you'll get both a disabled and an enabled opis in your mods folder, and the launcher will refuse to disable opis.
You have to go in manually, delete the disabled instance of opis, and then disable it again.