It was the line "KeyError" and then some unicode symbols; and the previous line - it's the actual line that generated the exception.
I don't think it's about languages; probably there is some bug in their phone functions. I seem to remember, I tried to set my phone profile name "Otto", but soon I discovered it was "MC". So I don't know how to correct the bug. It's only clear that the program tries to address that variable and there's no "dictionary entry" with that key. If I were you I might go barbaric and just try to comment out the parts of the code that cause the error.