Providing the player with new tools or adjusting the game interface, without fundamentally changing gameplay.
According to https://mods.factorio.com/mod/UtilizationMonitorBlargh/discussion/6015cb0ef0c4a012d76a30ff, the speaker alerts list is crashing when a mod script updates its settings.
I have just uploaded a new version could you please check if it is working now?
I had previously been experiencing an error when deleting a speaker (Space Exploration mod in use). The error no longer occurs after your last update. Thanks for maintaining this mod.