why

[bold depot]

I’ll look now

Remove the one you have in this folder D:\SteamLibrary\steamapps\common\Subnautica\BepInEx\plugins\Alchemy\OldIsland\TerrainPatchOldIsland.optoctreepatch'

This is what the instructions say: “Take the contents and put them into Subnautica\BepInEx\plugins\TerrainPatcher\patches”

[minor sandal]

fixed but now i can't build submarines

[bold depot]

Did you change anything else?

[minor sandal]

no

[bold depot]

When couldn’t you build Submarines? Earlier or just now?

[minor sandal]

i just redownloaded the mod to readd the patches folder to fix the issue

[minor sandal]

just now

[minor sandal]

this is all that was changed

[bold depot]

Going out on the road, maybe someone else can help. Otherwise you’ll have to wait