Game crashes when using a blueprint to connect a loader to a building.
Working fine before the recent update.

https://i.imgur.com/J06G5kq.png

Using other mods, mainly Krastorio2

The mod Miniloader (1.12.0) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event miniloader::on_built_entity (ID 6)
Entity is not loader.
stack traceback:
miniloader/snapping.lua:99: in function 'idiot_snap'
miniloader/snapping.lua:203: in function 'snap_loader'
miniloader/control.lua:132: in function 'handler'
miniloader/lualib/event.lua:15: in function <miniloader/lualib/event.lua:13>
stack traceback:
[C]: in function 'index'
__miniloader/snapping.lua:99: in function 'idiot_snap'
miniloader/snapping.lua:203: in function 'snap_loader'
miniloader/control.lua:132: in function 'handler'
miniloader/lualib/event.lua:15: in function <miniloader/lualib/event.lua:13>

another bug ctrl+c and ctrl+v
https://gyazo.com/a870e3e9d80da092f22e2bbdf24dbae1

+1

Thanks for the report! Should be fixed in v1.12.1.

Same game crash after update

I have the same problem.
What I'm doing here is copying the miniloader loader and any other building.
Error message:

Error while running event miniloader::on_built_entity (ID 6)
Entity is not loader.
stack traceback:
miniloader/snapping.lua:99: in function 'idiot_snap'
miniloader/snapping.lua:203: in function 'snap_loader'
miniloader/control.lua:132: in function 'handler'
miniloader/lualib/event.lua:15: in function <miniloader/lualib/event.lua:13>
stack traceback:
[C]: in function 'index'
__miniloader/snapping.lua:99: in function 'idiot_snap'
miniloader/snapping.lua:203: in function 'snap_loader'
miniloader/control.lua:132: in function 'handler'
miniloader/lualib/event.lua:15: in function <miniloader/lualib/event.lua:13>

I'm not able to reproduce on v1.12.1. I'm able to copy/paste miniloaders and assemblers in combination. Can you show exactly what you're doing to get this crash?

Same issue - copying a miniloader+splitter and pasting it feeding an assembler causes the crash.

Works for me?

There seems to be some other factor involved that I'm not understanding here.

same for me.
Not sure if it's related, but I'm using construction drones for construction.

Works fine with Constructions Drones on my end. I think I'll need to see a save game that's breaking for this one.

I had the crash before the update and no more crash when updating, also using construction drones. ping me in Factorio discord server if you still need the save.