https://forums.factorio.com/79578

Thanks boskid for opening this thread here... I was just going to do the same :)

Thanks for the report! This should be fixed in v0.6.5.

You did it!
Now it's working. Thanks!

The fix appears to have raised a new issue, at least for me. If I place a blueprint with circuit connections there is an unrecoverable error when the first entity is placed. Oddly, I can remove the entity ghost entirely and manually place the loader and it will still crash. Odder still is that the unloaders built fine.

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

UPDATE: This belongs as a separate issue. I have isolated this behavior to be occurring only when the railloader is built immediately adjacent a belt-loader ghost (Deadlock's Loaders to be specific). It also only happens when the belt-loader ghost is improperly oriented to the entity (there is some snapping logic in play there) but they cannot have their direction set before placing. I stepped back many versions of each mod and had the same behavior, FYI.

The error message indicates that you are circuit connected to an arithmetic or decider combinator. I’ll try to recreate; but it’s weird that Deadlocks Loaders seem to be involved.

@RepairmanSki Are you still able to reproduce this problem? I haven't been able to recreate the crash with combinators, BRLs, and Deadlock's compat loaders. If so, if you can post a save that would help me track it down.