Save files are typically located at C:\Users\[YourName]\AppData\Local\arr\Saved\SaveGames .
The build ID 220907 refers to a beta branch update released on September 7, 2022 . Download RAILROADS Online v220907 OnLine
Older versions often fail to launch if they detect configuration files from newer updates. Renaming or deleting the AppData/Local/arr folder (after backing it up) is often required to ensure a clean startup. Download RAILROADS Online v220907 OnLine