Open alpha testing of the 5.0 HD mod (online lobby).

Today, during my turn in the game (and therefore without the ability to save), the game crashed with the following message:

This is the first time this has happened. The launcher settings are as follows: Music Volume = 0 Sound Volume = 0 (I removed the parentheses because the forum engine truncates text within them). I couldn't find the "Sound.NewerLibraries" setting. The game's sound is turned off. What needs to be done to prevent this error from appearing again?