The saga continues... About a month ago, my installation of Train Sim Classic began crashing everytime I attempted to load any route, throwing up the age-old "Out of Memory" error message in the process, specifically: "Fatal error in mode LOAD_BLUEPRINT" . The full thread can be read here (assuming the link works), but eventually we found that the BlueprintSchema.xml file in the Temp folder was (seemingly) the cause of the issue, and the game was once again working fine once that had been deleted and rebuilt. If only. Recently, my game has begun crashing again, with the same exact error message (attached). My immediate thought was to try what worked last time, and delete and rebuild the BlueprintSchema file. However, that didn't fix anything. This is why I felt that I should make this a separate post rather than just continue on the original thread, as this issue appears to have a different cause. So, to recap on what I have already tried so far: - Cache has been cleared, both from the in-game menu and by deleting and reverifying the files through Steam. - All 3rd-party content has been fully uninstalled - No workshop content is (or has ever been) present in my installation - Both Railworks and Railworks64 have been set to use "High Performace" in my PC's graphics settings. - My graphics drivers have been updated to the most recent available version (in response to this issue, not before it started) - Game has been fully uninstalled and reinstalled (including removing any remaining files after a Steam uninstall), with all DLC save the Academy route left uninstalled. - In-game graphics settings are on 'Lowest' The one thing that I have managed to track down is that the 3D section of my GPU (in the Task Manager) window always spikes to 100% (and presumably demands more, leading to the crash) every time the game attempts to load any route or scenario - this crash occurs when attempting to create a new scenario or edit an existing one, as well as attempting to drive any train. I have attached a screenshot of my PC's specs - I have not noticed any issues with any of my other games, so the issue seems to be localised to TSC. TL;DR: Train Sim Classic keeps overloading my GPU and crashing, and I cannot for the life of me figure out why.
I saw your processor performance seems to be too low. How old is your computer? Check my signature for what computer I have.
I first got it in June 2021, so coming up on 5 years. The specs are the same as they were when new, the only things I've changed are the addition of 2 SSDs for more storage.
What exactly does the GPU temperature have to do with the crash? There are games where the GPU temperature exceeds 60°C. I use TSC every day for building. That error message is nothing new with TSC; I've encountered it several times myself. I always clear the cache / blueprints manually.
Do you build routes? I have experienced crashes while building. The reason may be that I used different track rules that crash. The signal links do not work across 2 different rules.
Yes, I do build tracks— but I don't publish any of my routes. My longest route is 1,900 kilometers; I build purely as a hobby. Yes, sometimes you can build continuously without issues, while on other days, TSC might crash.
No, I don't build my own routes. The closest I come is making the occasional custom scenario, but I've already deleted those, so they can't be the issue.
Start TSC from Steam with this in the launch options: Code: -LogMate -SetLogFilters="All" -lua-debug-messages After it crashes open the RailWorks folder and look for a txt log file (ts-year-month-date-time-.log) See if you can find something that might indicate what the problem is, or upload it here.
I did that, and the resultant file did contain a fair bit more info, but the same two messages appeared early on: 2026/05/16 11:38:55.742 - [Content] - Trace d:\build\CoreRelease\Code\DLLs\DataManagement\cBlueprintLibrary.cpp : 421 = Blueprint set not found : Kuju, RailSimulatorCore 2026/05/16 11:38:55.742 - [Content] - Trace d:\build\CoreRelease\Code\DLLs\DataManagement\cBlueprintLibrary.cpp : 452 = Blueprint set not found for: Cameras\EditCamera001.xml These appeared in the LogMate files before I ran your startup option. I don't think that these particular files are an issue, as I have deleted and rebuilt them multiple times - these may just be the first files that the game attempts to load. I have attached the full log to this reply in case someone can actually understand half of what it says.
I’m out right now and I’ve just realised I forgot to attach the file. My bad. I’ll edit this when I get home later. Edit: I had to copy and paste the contents to another .txt document because I couldn't attach the base file for some reason, but it should be there now
2 things: 1: I’ve never edited a route, only created custom scenarios that involved changing consists and nothing else. 2: The issue isn’t localised to just 1 route, it happens any time I try to load any scenario on any route.
People always try to look for the obvious for OOMs. Have you ever thought that there could be an issue with your GPU? Are you able to try another GPU? It could also be caused by some software on your computer, unrelated to TSC. I had issues with another game I was playing and kept getting this Nvidia error, then the game would CTD. Anyway, it turned out that some software on my computer was outdated, and when I updated it, the error disappeared.
I am working under the assumption that this is a graphics-related problem, as the 3D section of the GPU tab in Task Manager spikes to 100% immediately before each crash. I've updated my graphics drivers to the latest available version (with a clean installation) in response to this issue, but it doesn't seem to have done much. If you don't mind me asking, which software was it that was outdated on your end?
I can't see any obvious problems in the log except from usual errors. Have you limited the FPS in TSC?
I tried running a default academy scenario with the FPS capped at 58 (for both railworks and railworks64), and the game started once, but crashed when I attempted to load the same scenario again. I had LogMate open, so I managed to capture the full logs for this (for the first time). I have attached them to this reply. Just for reference, "ts-2026-05-17-11-27-39" seems to be the instance that the game loaded and started fine (on the frontend, anyway).
The scenario that crashes could be a locomotive that requires computer resources. Try a different scenario.
I've tried every default academy scenario, they all crash in the exact same way and leave the same error message.
It is a bit weird that you are missing the EditCamera001.bin located in [RailWorks\Assets\Kuju\RailSimulatorCore\Cameras] if you have verified the game files.
It gets weirder - I'm not. I'm looking at that exact file right now. Every single camera file (.bin and .xml) are all there.
