I'm getting crashes whenever I try to select a rail depot on electrified track. This doesn't occur with unelectrified depot. No error message, just the Windows crash. I can upload a savegame if need be, but this seems to be cross-pakset, so you may be able to reproduce this fairly easily.
I have managed to find and fix this, but I could only reproduce it with your pakset, not with Pak128.Britian-Ex. The problem occurred when a vehicle specified a vehicle that should precede it, but that vehicle was not found in the pakset, so you might want to check whether there is an error in the pakset. However, the game should not crash even when there is such an error, hence the fix. Thank you for the report.
Many thanks as ever James. I do have some old unused vehicles hanging around in my pak folders which I can imagine would lead to errors such as this, so I should have a clear-out!
apparently, this issue happens with class 370 APT, which is available from March 1980 to Nov 1994.
I have confirmed that the APT now works fine in the current 11.x branch.