Worked on enhancing the robustness of exception rendering in the JetBrains/rd repository, focusing on the RdFault error handling path. Addressed a critical bug by introducing a defensive try-catch around the ToString() call on inner exceptions, ensuring that failures during exception rendering no longer cause additional crashes. When rendering fails, the system now provides a clear fallback message, improving reliability for both developers and users inspecting errors. This update, implemented in C# and leveraging strong exception handling practices, aligns with broader goals of resilient software development and contributes to a smoother debugging experience in production environments without introducing new features.