What does the fatal error error-rmx version mismatch mean on Tomb Raider the angel of darkness?

The "fatal error error-rmx version mismatch" in Tomb Raider: The Angel of Darkness typically indicates that there is a problem with the game's files, specifically that the game is trying to run with incompatible or outdated resources. This can occur due to modifications, incorrect installation, or an attempt to run the game on an unsupported operating system. To resolve this, players should ensure that they are using the correct version of the game and verify the integrity of the game files, especially if using a digital distribution platform. If modifications were made, reverting to the original files may also help.