Using K2-SE with crafting efficiency2 and k2_se_crafting_efficiency it crashed trying to research rare metals smelting efficiency
28429.975 Error MainLoop.cpp:1288: Exception at tick 38253328: The mod Q's AI Core Mod (1.0.0) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event AICore::on_gui_closed (ID 88)
AICore/control.lua:505: attempt to index field 'element' (a nil value)
stack traceback:
AICore/control.lua:505: in function <AICore/control.lua:504>

And another one on absolutely different research

The mod Q's AI Core Mod (1.0.0) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event AICore::on_gui_closed (ID 88)
AICore/control.lua:505: attempt to index field 'element' (a nil value)
stack traceback:
AICore/control.lua:505: in function <AICore/control.lua:504>

And a third crash but this time it wasn't even closing or opening research screen - it seems it tries some event on ANY interface window open or close - this time it was "what is it used for" a mod for searching recipees and i just closed its interface.

That's problematic. I'll look into it.

Version 1.0.1 of Q's AI Core Mod is now available. I think I fixed the crash, but let me know if the problem persists.

Thanks, will test it.

So fas so good. No crashes in two hours.