I received the following crash message when several belt balancers were included in the selection area for an upgrade. I have -NOT- been able to reproduce so far. The upgrade was to change red belts, undergrounds, and splitters to yellow. Other mod elements included in the selection area were mini loaders, an ltn station, an ltn combinator, and bulk rail loaders. All mods were latest version as of the time of this post. Game version 1.1.50. World is the default "testing (Testing)" scenario.
The mod Belt Balancer (3.0.0) caused a non-recoverable error.
Please report this error to the mod author.
Error while running event belt-balancer::on_tick (ID 0)
invalid key to 'next'
stack traceback:
[C]: in function 'next'
belt-balancer/control.lua:220: in function <belt-balancer/control.lua:219>