7050.776 Error MainLoop.cpp:1285: Exception at tick 11034109: The mod ModMash Splinter, Them (1.1.19) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event modmashsplinterthem::on_entity_died (ID 4)
modmashsplinterthem/control.lua:225: bad argument #2 of 2 to 'random' (interval is empty)
stack traceback:
[C]: in function 'random'
modmashsplinterthem/control.lua:225: in function 'local_init_surface'
modmashsplinterthem/control.lua:249: in function 'local_clear_surface'
modmashsplinterthem/control.lua:1455: in function 'local_removed'
modmashsplinterthem/control.lua:1726: in function <modmashsplinterthem/control.lua:1725>

makes no sense interval should be 6 min and 8-25 max so there is an interval. I am plugging up with and extra check

I happens when i destroy un robotport in a them base

Yeah but it's not that. That seem to work most the time but the function math.random(min,max) seem to be failing just sometimes.
it's saying there is no interval, nothing between the min and max example math.random(1,1) even though it should work just return 1. the calls I make to it though should be something math.random(6,25) so not sure... I actually had initially had a who swag of tests checking the interval was greater than 1 but it shouldn't have been required and was just code bloat so it went. I guess I should make a new function testing every thing.

Thank you for your quick answer, but after your update, a random crash:

568.685 Error MainLoop.cpp:1285: Exception at tick 11221800: The mod ModMash Splinter, Them (1.1.20) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event modmashsplinterthem::on_nth_tick(120)
modmashsplinterthem/control.lua:1046: bad argument #2 of 2 to 'random' (interval is empty)
stack traceback:
[C]: in function 'random'
modmashsplinterthem/control.lua:1046: in function 'check_base_exists'
modmashsplinterthem/control.lua:1348: in function 'local_nth_tick_surface'
modmashsplinterthem/control.lua:1393: in function <modmashsplinterthem/control.lua:1374>

Dammit. Sorry its getting late now i may need to look at tomorrow

i'll fix this one

I will remove the them mod because the game has become unplayable.
Can i put it back later (after fixing) ?

yep

it appears another function was returning values below the start interval... I have put checks around that function. Will test more tomorrow

A bit too fast:

51.832 Error AppManagerStates.cpp:1590: modmashsplinterthem/control.lua:992: ')' expected (to close '(' at line 991) near 'end'