Thanks for the report. I made the rolling stocks to reject connection if it happens over an occupied rail connection, which could happen if there were rolling stocks with tiny bounding box involved. Fix will be released with 2.1.13.


Thank you for fixing the bug so quickly. When is version 2.1 ...

The error occurs in both Factorio versions 2.0.77 and 2.1.12. I have attached the save file in the attachment. The crash occurs after loading the save file and running for a few minutes.



0.002 2026-07-26 22:43:06; Factorio 2.1.12 (build 87038, win64, steam)
0.003 Operating system: Windows 10 ...