It is important to acknowledge that these "pre-installed" versions were essentially pirated software. They bundled paid software (MSTS) with free community mods, often without the modders' permission. While they popularized the hobby, the modern community encourages supporting official developers and respecting the intellectual property of content creators.
Locomotives, rolling stock, and routes are pre-tested to prevent the infamous "failed to create cabview" crashes. MSTS with Indian Railways Add-ons -Pre-installed-
I can provide tailored troubleshooting or system optimization steps based on your needs. Share public link It is important to acknowledge that these "pre-installed"