Scarm License Key

The free version may restrict saving. A license key allows you to save unlimited projects, reopen them, iterate on your designs, and collaborate with club members.

If the Extensions menu shows "SCARM License Key (outdated)," you must refresh the license in your account and reinstall it. Transfer Issues: Scarm License Key

You can buy the basic license or bundles that include the Model Trains Simulator. Secure Payment: Most users pay via PayPal or credit card. The free version may restrict saving

Go to Options > Settings > 3D and check "Auto-build 3D scene when placing objects." This lets you see elevations, bridges, and tunnels in real-time. iterate on your designs

Resolving License Activation and Installation Issues - SCARM