Vulcan Productions Motorail GUV Pack

Yeah the pack still has a texture bug and crashes the game, I even installed the older working one to check. All seem to crash.

Have you double-checked that you have the very latest version of the AP Mk1 Pack installed? I don't see any errors on my own test scenario.

Those errors usually come about when DRM copyright protection is kicking in. Could you try deleting the two files called Blueprints.pak that are located in the AP Mk1 and the DTG BR Blue Pack 2 folders and also clearing your cache in TSC and then re-running to see what happens? I've seen a couple of instances of this problem, but more widespread is people who aren't having these issues and run them fine - annoyingly.

Common issue with the black angular mess appearing is that BR Blue Pack 02 isn't selected in the Object Set Filter fly-out when the scenario was created.

Exactly. The issue is - how do you remember that this coach needs another DLC ticked? You'll forget over time where it is from and that it requires to recheck the manual to remind you of the BRBluePack02.

I would change the <DisplayName> to something like "ICS Motorail (BRBluePack02)" so when editing a scenario it reminds you of that hidden dependency.