once i use my last torpedo it usually says this. I have not been runnging any code or cheats, i am playing on my laptop, and i am not using any mods
Maybe my explanation wasn't so good. The game itself has a normal English character set.
I was thinking that your operating system might use a special dual Unicode character set such as Japanese, Chinese, or other languages with many characters use and that that might be the cause of the error you observed.