non-recoverable error

[bobDoesThings]

is this the right place to let you know:

772.880 Error MainLoop.cpp Exception at tick 99362351: The mod Pyanodons Alternative Energy (1.2.20) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event pyalternativeenergy::on_nth_tick(61)
__pyalternativeenergy__/scripts/wind/wind.lua:94: attempt to concatenate local 'direction' (a nil value)
stack traceback:
__pyalternativeenergy__/scripts/wind/wind.lua:94: in function 'draw_windmill'
__pyalternativeenergy__/scripts/wind/wind.lua:144: in function <__pyalternativeenergy__/scripts/wind/wind.lua:129>