As per the post I made last night on my Facebook page:
Apparently some of my locomotive thumbnail pictures, which have worked fine for up to 10 years, are now deemed "non-standard" by the updated TSC and cause it to crash the QD loco selection menu (what was that about "defensive" programming?).
Check out my replies to this thread:
https://forums.dovetailgames.com/threads/train-simulator-classic-%E2%80%93-core-update-route-refresh.69230/page-3#post-646312In advance of an official patch via Steam, I've uploaded to my Google drive an "rwp" file, called Smokebox_TSC_Updated_Loco_Thumbnails_29Apr23.rwp, that contains all the necessary updated loco thumbnails:
https://drive.google.com/file/d/10B_t0LkjjmTQFHAajVyw_KD6IWzzArjD/view?usp=sharingThe rwp is a zipfile. The root folder in it is "Assets". Simply unzip that folder it into your RailWorks root folder (usually located at C:\Program Files (x86)\Steam\steamapps\common\RailWorks).
The "standard" isn't 512x256px. It can be 256x128px too, or even better, 256x144px to avoid stretching. What now causes the problem is interlacing in the png image. which used to work fine (until this stupid update).