When i tried to place random combinator it instantly crashes

Error while running event UsefulCombinators::on_tick (ID 0)
UsefulCombinators/combinators/uc-random-combinator.lua:80: attempt to index field 'parameters' (a nil value)
stack traceback:
UsefulCombinators/combinators/uc-random-combinator.lua:80: in function 'on_tick'
UsefulCombinators/control.lua:82: in function <UsefulCombinators/control.lua:77>

Hmm, I'll figure it out
Thanks for the heads up

Same:

The mod Useful Combinators (0.5.0) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event UsefulCombinators::on_tick (ID 0)
UsefulCombinators/combinators/uc-random-combinator.lua:80: attempt to index field 'parameters' (a nil value)
stack traceback:
UsefulCombinators/combinators/uc-random-combinator.lua:80: in function 'on_tick'
UsefulCombinators/control.lua:82: in function <UsefulCombinators/control.lua:77>

Lemme go ahead and necro this...
Line 80 should be
local count = control.parameters[1].count or 0 (and not control.parameters.parameters[1].count)
It also seems the "ticks" is actually "seconds"