Hi there! I understand that you're encountering a black window when trying to play Toontown Rewritten. Let’s work together to resolve this issue.

To start, could you please provide a bit more detail? Is the black window appearing when you launch the game, or does it happen at a specific point during gameplay? Also, have you tried any troubleshooting steps so far?

In the meantime, here are a few general solutions we can try:

1. Restart the Game: Sometimes simply restarting the game can fix temporary graphics issues.

2. Check Graphics Settings: Make sure your graphics settings aren’t set too high for your system. If the game loads but shows a black screen, it might be struggling to render. You can try lowering settings.

3. Update Your Graphics Drivers: Ensure that your graphics drivers are up to date. You can usually find drivers on the manufacturer's website (like NVIDIA or AMD).

4. Run as Administrator: Right-click on the game shortcut and select "Run as administrator" to see if that resolves the issue.

5. Clear Cache or Reinstall the Game: If the problem persists, consider clearing the game’s cache or, as a last resort, reinstalling the game.

These steps often help with black screen issues. Let me know what you find out or if there are any specifics you think I should know!