decompressZlib: inflate failed

[Elkien3]

Windows 10 Minetest 5.3.0, trying to use the world_2km.dat
During mod load (before the map is loaded) I get the error: (part of the path ommitted)
ModError: Failed to load and run script from ..\mods\geo-mapgen\init.lua: decompressZlib: inflate failed stack traceback: [C]: in function 'decompress' ..\mods\geo-mapgen\init.lua:121: in main chunk Check debug.txt for details