After another crash on in an Acela on Boston Providence after reinstalling mods, I uninstalled the following and got through this service run (Awesome TSW3&4 Boston-Providence at 16:07 Acela)
"C:\Users\bgmca\Desktop\TSW4 Time Mods\Bescot-LightingTimers_TSW4.pak" "C:\Users\bgmca\Desktop\TSW4 Time Mods\!!Laika-OrangeUKPIS-TSW4.pak" "C:\Users\bgmca\Desktop\TSW4 Time Mods\!Laika-BetterRainV2-TSW4.pak" "C:\Users\bgmca\Desktop\TSW4 Time Mods\Aran-BKL-Time-of-Day-Update-v1.0.pak" "C:\Users\bgmca\Desktop\TSW4 Time Mods\Aran-BML-Time-of-Day-Update-v1.0.pak" "C:\Users\bgmca\Desktop\TSW4 Time Mods\Aran-CRR-Time-of-Day-Update-v1.0.pak" "C:\Users\bgmca\Desktop\TSW4 Time Mods\Aran-ECW-Time-of-Day-Update-v1.0.pak" "C:\Users\bgmca\Desktop\TSW4 Time Mods\Aran-GCC-Time-of-Day-Update-v1.0.pak" "C:\Users\bgmca\Desktop\TSW4 Time Mods\Aran-GWE-Time-of-Day-Update-v1.0.pak" "C:\Users\bgmca\Desktop\TSW4 Time Mods\Aran-HMA-Time-of-Day-Update-v1.0.pak" "C:\Users\bgmca\Desktop\TSW4 Time Mods\Aran-HRR-Time-of-Day-Update-v1.0.pak" "C:\Users\bgmca\Desktop\TSW4 Time Mods\Aran-LIRR-Time-of-Day-Update-v1.0.pak" "C:\Users\bgmca\Desktop\TSW4 Time Mods\Aran-MSB-Time-of-Day-Update-v1.0.pak" "C:\Users\bgmca\Desktop\TSW4 Time Mods\Aran-RRO-Time-of-Day-Update-v1.0.pak" "C:\Users\bgmca\Desktop\TSW4 Time Mods\Aran-SKA-Time-of-Day-Update-v1.0.pak" "C:\Users\bgmca\Desktop\TSW4 Time Mods\Aran-SPG-Time-of-Day-Update-v1.0.pak"
But in hindsight, none of these should affect this route - WTF?
I put them back so all my original mods are back in. I'm going to try LIRR and Harlem Lines next so we'll see how that goes...
UPDATE
Found this thread on Reddit:
The poster wrote, "Through elimination I found the trigger for the crash was a vegetation enhancement mod released by Bescot and Jetwash. All is now working fine without that mod installed"
I removed !!BescotJetwash-GroundfoliageEP_BPE.pak from C:\Program Files (x86)\Steam\steamapps\common\Train Sim World 4\WindowsNoEditor\TS2Prototype\Content\DLC and will test later.