In certain orientations on overlapped rails, rail signals will fail to produce correct blocks, whereas in a mirrored orientation, they will produce correct blocks. I've attached a picture of the issue, and a save file with the issue laid out.

The tracks on the left side of the image have the issue ...

Issue:

Removing a rail mod (Ex: Concreted Rails) from the modlist and then loading a save with modded rails placed down results in aborting the load and the following message: 'Entity cannot be destroyed'.

Replication:

1. Start a game with a rail mod enabled (Concreted Rails, I assume Tug would ...