Pipeworks crashes in Mineclonia 0.121.1

[oktayacikalin]

I just updated Mineclonia from 0.120.1 to 0.121.1 and got this:

2026-05-07 21:30:00: ERROR[Main]: ModError: Failed to load and run script from /data/worlds/dritte-erde/worldmods/pipeworks/init.lua:
2026-05-07 21:30:00: ERROR[Main]: .../worlds/dritte-erde/worldmods/pipeworks/mcl_furnaces.lua:15: attempt to index local 'old_blast_furnace' (a nil value)
2026-05-07 21:30:00: ERROR[Main]: stack traceback:
2026-05-07 21:30:00: ERROR[Main]: 	.../worlds/dritte-erde/worldmods/pipeworks/mcl_furnaces.lua:15: in main chunk
2026-05-07 21:30:00: ERROR[Main]: 	[C]: in function 'dofile'
2026-05-07 21:30:00: ERROR[Main]: 	/data/worlds/dritte-erde/worldmods/pipeworks/init.lua:106: in main chunk
$? = 0

Pipeworks is at commit fe55ac9 (HEAD -> master, origin/master, origin/HEAD).